---
layout: page
title: Links
permalink: /links/
---

This is a list of links which I find interesting.

## Articles / blog entries

- [Babel - a loop-avoiding distance-vector routing protocol](https://witestlab.poly.edu/blog/babel-a-loop-avoiding-distance-vector-routing-protocol/)
- [Mesh networking with Yggdrasil](https://read.cash/@TomZ/mesh-networking-with-yggdrasil-e300d18e)
- [A Super-Simple Makefile for Medium-Sized C/C++ Projects](https://spin.atomicobject.com/makefile-c-projects/)
- [The Gemini web: a brief intro](https://medium.com/nagoya-foundation/the-gemini-web-a-brief-intro-a12155cf86bc)
- [The Invisible Internet Project Old Blog](https://i2p.medium.com/)
- [The Invisible Internet Project New Blog](https://theoverlay.ghost.io/)
- [Exclusive Interview with Guntram: Lead Developer of a popular custom deGoogled Android ROM called LeOS](https://nixfaq.org/2021/01/exclusive-interview-with-guntram-lead-developer-of-a-popular-custom-degoogled-android-rom-called-leos.html)
- [IPv6 only hosting list 2022](https://blog.miyuru.lk/ipv6-hosting-2022/)
- [Benjojo's Blog](https://blog.benjojo.co.uk/)
- [vaneyckt - notes to my future self](https://vaneyckt.io/)
- [Spelling and grammar of English](https://github.com/systemcrash/systemcrash.github.io/blob/main/spgr.md)
- [Why not GitHub?](https://sanctum.geek.nz/why-not-github.html)
- [Guidance for Choosing an Elliptic Curve Signature Algorithm in 2022](https://soatok.blog/2022/05/19/guidance-for-choosing-an-elliptic-curve-signature-algorithm-in-2022/)
- [pigeons about quicktun](http://pigeonsnest.co.uk/stuff/quicktun.html)
- [Microsoft Graveyard - Killed by Microsoft](https://killedbymicrosoft.info/)
- [Google Graveyard - Killed by Google](https://killedbygoogle.com/)
- [RFC for 700 HTTP Status Codes](https://github.com/joho/7XX-rfc)
- [Collected emails by Daniel Stenberg](https://bagder.github.io/emails/)
- [Git bombs - Exploding Git Repositories](https://kate.io/blog/git-bomb/)
- [Freie Messenger](https://www.freie-messenger.de/)

## Security / Privacy

- [Stormy Cloud](https://stormycloud.org/)
- [OSINT Tips](https://ohshint.gitbook.io/oh-shint-its-a-blog/osint/osint-protips?s=09)
- [Open-source tests of web browser privacy](https://privacytests.org/)
- [EFail Vulnerabilities in OpenPGP and S/MIME](https://efail.de/)
- [Global Privacy Control](https://globalprivacycontrol.org/) (HTTP header)
- [The .zip TLD sucks and it needs to be immediately revoked](https://financialstatement.zip/)
- [Rosenpass](https://rosenpass.eu/)
- [YaCy](https://yacy.net/)
- [Developing ECH for OpenSSL (DEfO)](https://defo.ie/)
- [Cloudflare as a threat / Avoid cloudflare](https://arclight.pro/posts/avoid-cloudflare/)
- [Email Self-Defense](https://emailselfdefense.fsf.org/)
- [Let's Decentralize](https://letsdecentralize.org/)
- [Big Ass Data Broker Opt-Out List](https://github.com/yaelwrites/Big-Ass-Data-Broker-Opt-Out-List) (mainly USA)
- [Datenanfragen.de - Nutze Dein Recht auf Datenschutz](https://www.datenanfragen.de/) (German)
- [PrivacyTools](https://www.privacytools.io/)
- [Test Ad Block - Toolz](https://d3ward.github.io/toolz/adblock.html)
- [EFF Cover Your Tracks](https://coveryourtracks.eff.org)
- [*privacy not included](https://foundation.mozilla.org/en/privacynotincluded/)
- [privacy.sexy - Collection of scripts to improve privacy](https://privacy.sexy/)
- [SSH Terraping attack](https://terrapin-attack.com/)
- [ssh-audit](https://github.com/jtesta/ssh-audit)
- [SHAttered - We have broken SHA-1 in practice](https://shattered.io/)
- [The Dangers of curl bash](https://lukespademan.com/blog/the-dangers-of-curlbash/)
- [Strftime](https://strftime.net/)
- [DNS Zonemaster](https://zonemaster.net/)
- [ A list of AI agents and robots](https://github.com/ai-robots-txt/ai.robots.txt)

## Communities

- [tilde.club](https://tilde.club/)
- [tildegit - git hosting for the tildeverse](https://tildegit.org/)
- [IRCNow](https://ircnow.org/)
- [Contributor Covenant](https://www.contributor-covenant.org/)
- [AMC](https://amcforum.wiki/)
- [obl.ong community](https://forum.obl.ong/)

### Forum "rules" / tips

- [Don't ask to ask, just ask](https://dontasktoask.com/)
- [The XY Problem](https://xyproblem.info/)
- [How To Ask Questions The Smart Way](http://www.catb.org/~esr/faqs/smart-questions.html)
- [no hello](https://nohello.net/)
- [Questions to ask yourself before commenting on social media](http://elisegravel.com/en/blog/questions-to-ask-yourself-before-commenting-on-social-media/)

## Books

- [The Hitchhiker's Guide to DFIR: Experiences From Beginners and Experts](https://leanpub.com/TheHitchhikersGuidetoDFIRExperiencesFromBeginnersandExperts) (free)
- [wizard zines](https://wizardzines.com/)
- [Introduction to Compilers and Language Design](https://www3.nd.edu/~dthain/compilerbook/)
- [Waiting for Blue Robot - How To Make an Open-Source Community-Driven Project, Manage It and To Remain a Human](https://waiting-for-blue-robot.gitlab.io/)
- [Free Programming Books](https://goalkicker.com/)
- [A collaborative IPv6 book](https://github.com/becarpenter/book6)
- [Beej's Guide to Network Programming](https://beej.us/guide/bgnet/)
- [Practical Cryptography for Developers](https://cryptobook.nakov.com/)
- [cpu.land - Putting the “You” in CPU](https://cpu.land/)
- [Crypto 101](https://www.crypto101.io/)

## Web 3.0

- [ProtoSchool - Interactive tutorials on decentralized web protocols](https://proto.school/)
- [IPFS](https://ipfs.tech/)
- [IPFS public gateway blocklist implementation](https://github.com/ipfs-shipyard/nopfs)
- [IPFS blocklists](https://denyli.st/)
- [Web3 is Going Just Great](https://web3isgoinggreat.com/)
- [nostr.how](https://nostr.how/en/what-is-nostr)
- [nostr.com](https://nostr.com/)
- [Status - Private, Secure Communication](https://status.im/)

## Routing / Networking

- [Linux Advanced Routing & Traffic Control HOWTO](https://lartc.org/howto/)
- [Task-centered iproute2 user guide](https://baturin.org/docs/iproute2/)
- [Unofficial WireGuard Documentation](https://github.com/pirate/wireguard-docs)
- [WireGuard VPN - Troubleshooting](https://ubuntu.com/server/docs/wireguard-vpn-troubleshooting)
- [An introduction to Linux virtual interfaces: Tunnels](https://developers.redhat.com/blog/2019/05/17/an-introduction-to-linux-virtual-interfaces-tunnels)
- [IPoAC Lyric](https://steve.savitzky.net/Songs/pigeon/)
- [Bufferbloat.net](https://www.bufferbloat.net/)
- [Waveform Bufferbloat test](https://www.waveform.com/tools/bufferbloat)

- [Route Chain](https://github.com/xddxdd/route-chain.git)
- [Traceroute Haiku](https://github.com/benjojo/traceroute-haiku.git)

- [Nmap Cheat Sheet](https://gist.github.com/rsperl/321aac3d529aa8f8c7924fd12d581b67) [Source](https://www.stationx.net/nmap-cheat-sheet/)
- [pcapfix](https://f00l.de/pcapfix/)

- [Linux Network Namespace in systemd](https://github.com/systemd/systemd/issues/2741#issuecomment-336736214)
- [WireGuard with Linux Network Namespaces](https://github.com/dadevel/wg-netns)

- [go-babel](https://github.com/stv0g/go-babel) - a babel implementation in Go
- [curl from start to end](https://daniel.haxx.se/blog/2023/10/24/curl-from-start-to-end/)
- [Routing Pusheen Telegram stickers](https://t.me/addstickers/RoutingPusheen)

### RouterOS

- [Mikrotik RIF Viewer](https://gitlab.com/DerEnderKeks/mikrotik-rif-viewer)
- [MikroTik RouterOS v7 Commonly Used Filters](https://rickfreyconsulting.com/wp-content/uploads/2022/04/ROSv7-Filters-Cheat-Sheet-1.pdf)

### IPv4 vs IPv6

- [IPv4 flag day](https://ipv4flagday.net/)
- [Hochschulen in Deutschland mit IPv6](https://www.thomas--schaefer.de/HochschuleninDeutschlandmitinternet.html)
- [Google IPv6 Country Rank](https://www.aelius.com/njh/google-ipv6/)
- [IPv6 Excuses](https://ipv6excuses.com/)
- [IPv6 Excuse Bingo](https://ipv6bingo.com/)
- [Here's how you can disable IPv6](https://howtodisableipv6.com/)
- [The Legacy IP Only / IPv6 Horse And Buggy Stickers](https://www.internetsociety.org/blog/2013/07/the-legacy-ip-only-ipv6-horse-and-buggy-stickers-how-to-get-copies/)
- [The real Internet – the truth about your connectivity](https://www.skutecnyinternet.cz/en/)
- [IPv6 License Plates](https://ipv6.dad/plates/)
- [Legacy IP License Plates](https://ipv6.dad/legacyip/)

## Firewall

- [nftables cheat sheet](https://wiki.nftables.org/wiki-nftables/index.php/Quick_reference-nftables_in_10_minutes)
- [nftables wiki](https://wiki.nftables.org/)
- [nftwatch](https://github.com/flyingrhinonz/nftwatch)
- [OpenGFW](https://github.com/apernet/OpenGFW)
- [Should I filter output?](https://shouldifilteroutput.com/)
- [Should I block ICMP?](http://shouldiblockicmp.com/)

### BGP

- [BGP Filter Guides](https://bgpfilterguide.nlnog.net/)
- [BGP Tutorial [YouTube]](https://www.youtube.com/watch?v=oKyhrbG3sjI) (English)
- [local-pref considered evil](https://media.ccc.de/v/denog13-12617-local-pref-considered-evil) (English)
- [Network / IP Basics](https://media.ccc.de/v/routingdays16-18-network_ip_basics) (German)
- [iBGP Fundamentals](https://media.ccc.de/v/routingdays16-14-ibgp_fundamentals) (German)
- [(e)BGP Fundamentals](https://media.ccc.de/v/routingdays16-10-e_bgp_fundamentals) (German)
- [Routing in the Internet](https://media.ccc.de/v/routingdays16-9-routing_in_the_internet) (German)
- [Policy based Routing](https://media.ccc.de/v/routingdays16-16-policy_based_routing) (German)
- [BGP und OSPF](https://media.ccc.de/v/routingdays16-12-bgp_und_ospf) (German)
- [Dynamisches Routing mit OSPF](https://media.ccc.de/v/routingdays16-6-dynamisches_routing_mit_ospf) (German)
- [List of providers that offer BGP sessions [Google Docs]](http://bgp.services/)
- [BGP Reports](https://bgp.potaroo.net/)
- [µbgpsuite](https://codeberg.org/1414codeforge/ubgpsuite) (including `bgpgrep`)
- [BGP Roles and More - Slides](https://datatracker.ietf.org/meeting/105/materials/slides-105-idr-sessc-draft-ietf-idr-bgp-open-policy-00)
- [IXP megabit/sec cost & comparison](https://peering.exposed/)
- [IRR explorer](https://irrexplorer.nlnog.net/)
- [Has 2000::/12 been announced again?](https://is2000slash12announcedagain.com/)

### DN42

- [Multiple servers on dn42: iBGP and IGPs by jlu5](https://jlu5.com/blog/dn42-multiple-servers-ibgp-igps)
- [BGP and dn42 on a Windows Server](https://jlu5.com/blog/bgp-dn42-windows-server)
- [Routing and dn42](https://media.ccc.de/v/EH2010-3730-de-dn42) (English)
- [Camp++ 0x7e0 // Joining dn42 by rotty+jomat](https://www.youtube.com/watch?v=_X1K4j-GEu0) (English)
- [[ch] dn42](https://yewtu.be/watch?v=IOA9r0F-U7w) (English)
- [ROA Alerts (highdef.network)](https://routegraphs.highdef.network/roa-alerts)

### DNS

- [DNSSEC Guide](https://dnsinstitute.com/documentation/dnssec-guide/)
- [dnssec-failed.org](http://dnssec-failed.org/) (Should not be resolvable with DNSSEC enabled)
- [DNSSEC Resolver Test](https://wander.science/projects/dns/dnssec-resolver-test/)
- [DNSSEC Resolver Test](https://rootcanary.org/test.html)
- [Knowledge-Sharing and Instantiating Norms for DNS](https://kindns.org/)
- [kindns.org - Self Assessment](https://kindns.org/self-assessment/)
- [DNSViz](https://dnsviz.net/)
- [Verisign DNSSEC Analyzer](https://dnssec-debugger.verisignlabs.com/)
- [DNS Morons](https://www.sput.nl/internet/dns-morons.html)
- [Alternative Free Identity System](https://github.com/Revertron/Alfis)
- [Meshname](https://github.com/zhoreeq/meshname)
- [DNS flag day 2020](https://www.dnsflagday.net/2020/)
- [DNS-OARC](https://www.dns-oarc.net/)
- [mess with dns](https://messwithdns.net/)
- [obl.ong](https://home.obl.ong/)

## E-Mail

- [Learn and Test DMARC](https://www.learndmarc.com/)

## Darknet

- [ZeroNet(X)](https://zeronet.dev/)
- [Awesome ZeroNet](https://github.com/ZeroNetX/awesome-zeronet)
- [Freenet / Hyphanet](https://www.hyphanet.org/)
- [Are We P2P Yet?](https://arewep2pyet.com/) (Matrix messenger)
- [Am I Using Tor](https://amiusingtor.net/)
- [I2P Proxy Check](https://checki2p.com/)
- [Meshtastic MeshMap](https://meshmap.net/)

## Censorship

- [Internet Resilience](https://pulse.internetsociety.org/resilience)
- [NetBlocks](https://netblocks.org/)
- [NetBlocks Webtest](https://api.webprobe.org/)
- [OONI Probe Web](https://probe-web.ooni.org/)
- [DPIdetector - VPN protocols in Russia](https://dpidetector.org/en/)
- [Great Firewall Report](https://gfw.report/)
- [Open Observatory of Network Interference](https://ooni.org/)
- [JugendschutzSchutzProgramm](https://jugendschutzschutzprogramm.de/)

## Android

- [Lagrange Pre-Release F-Droid Repo](https://skyjake.github.io/fdroid/repo/)
- [IzzyOnDroid F-Droid Repo](https://apt.izzysoft.de/fdroid/)
- [Molly - Signal fork](https://molly.im/)
- [List of F-Droid reposorities](https://fdroidfamily.codeberg.page/repos/)
- [A list of Free and Open Source Software (FOSS)](https://github.com/offa/android-foss)
- [Your app is not compliant with Google Play Policies: A story from hell](https://sylviavanos.nl/blog/2021/12/24/google_play_hell.html)
- [Pithus (analyze apps)](https://beta.pithus.org/)

## Linux

- [Bash-Oneliner](https://onceupon.github.io/Bash-Oneliner/)
- [Linux WPAN](https://linux-wpan.org/)
- [crontab guru](https://crontab.guru/)

### Arch Linux

- [No such interface org.freedesktop.portal.OpenURI on Arch Linux xfce](https://steventang.net/blog/2023/openuri)

### Debian

- [Debian packaging tutorials for the modern developer](https://github.com/FooBarWidget/debian-packaging-for-the-modern-developer/)

## Windows

- [Legacy Update: Get back online, activate, and install updates on your legacy Windows PC](https://legacyupdate.net/)

### Cute linuxes

- [Nyarch Linux](https://nyarchlinux.moe/)
- [UwUntu](https://uwuntuos.site/)

## Tools

- [I Know What You Download](https://iknowwhatyoudownload.com/en/peer/)
- [http.james' Fingerprinting Experiment](https://fpresearch.httpjames.space/)
- [DNS leak test](https://www.dnsleaktest.com/)
- [neverssl.com](https://neverssl.com/)
- [Browser-Erweiterung, um Premiumangebote deutscher Nachrichtenseiten über Ihren Bibliothekszugang zu nutzen.](https://stefanw.github.io/bibbot/) (German(y))
- [Is BGP safe yet?](https://isbgpsafeyet.com/)
- [RPKI test NLnet Labs](https://rpkitest.nlnetlabs.net/)
- [Check My DNS](https://cmdns.dev.dns-oarc.net/) (with RPKI test)
- [Cloudflare Radar](https://radar.cloudflare.com/)
- [Meter.net World Ping Test](https://www.meter.net/tools/world-ping-test/)
- [Show random HTTP status code](https://yourwife.zip/)
- [VirusTotal](https://www.virustotal.com/)
- [Pithus APK analyser](https://beta.pithus.org/)
- [SPDX License List](https://spdx.org/licenses/)
- [OpenDefinition licenses](http://opendefinition.org/licenses/)
- [The Internet Portal](https://theinternetportal.net/)
- [Internet Society Pulse NetLoss Calculator](https://pulse.internetsociety.org/netloss)
- [scanme.nmap.org](http://scanme.nmap.org/)
- [MQTT test server](https://test.mosquitto.org/)
- [Wonders of Street View](https://neal.fun/wonders-of-street-view/)
- [A list of SaaS, PaaS and IaaS](https://github.com/ripienaar/free-for-dev)
- [crt.sh - Certificate Search](https://crt.sh/)
- [jort.link (for Mastodon)](https://jort.link/)
- [cryptii](https://cryptii.com/)
- [ciphereditor](https://ciphereditor.com/)
- [Miranda UPNP Tool](https://github.com/kimocoder/miranda)
- [Browse a cleaner web!](https://12ft.io/) (Anti-Paywall, Ads, Popups Proxy)
- [Monaspace](https://monaspace.githubnext.com/) (Monospace by GitHub)
- [fernet-cli](https://github.com/fernet/fernet-cli)
- [SLA & Uptime calculator](https://uptime.is/)
- [WireGuard AllowedIPs Calculator](https://www.procustodibus.com/blog/2021/03/wireguard-allowedips-calculator/)
- [BSoD maker](https://bsodmaker.net/)
- [IPv6 test](http://v6.de/)

### Website analysis tools

- [Hardenize](https://www.hardenize.com/)
- [Internet Hygiene Portal](https://ihp.csa.gov.sg/)
- [Qualys SSL Labs](https://www.ssllabs.com/)
- [Internet.nl](https://internet.nl/)
- [Mozilla Observatory](https://observatory.mozilla.org/)
- [HTTP response headers analyzer](https://securityheaders.com/)
- [Qualys SSL Labs](https://www.ssllabs.com/)
- [CryptCheck (TLS, SSH)](https://cryptcheck.fr/)
- [Security Headers](https://securityheaders.com/)

- [TheMarkup Blacklight](https://themarkup.org/blacklight)

- [The Real Internet / IPv6 test](https://www.skutecnyinternet.cz/en/website-test/)

## Shops

- [Turris Router](https://www.turris.com/en/)
- [IPv6 Buddy](https://ipv6buddy.com/)
- [Amazon Alternativen](https://codeberg.org/phranck/Amazon-Alternativen)

### Merchandise

- [FSFE Merchandise](https://fsfe.org/order/order.en.html)
- [FSF Merchandise](https://shop.fsf.org/)
- [digitalcourage shop](https://shop.digitalcourage.de/)
- [Programming mascots](https://www.etsy.com/de/shop/MagicMeowToys?section_id=28685021)
- [Ubuntu Touch Merchandise](https://ubports.com/shop)
- [I2P T-Shirt (EU)](https://www.getdigital.de/i2p-fanshirt.html)
- [FLOSS Shop](https://www.floss-shop.de/)

## Education (about computer science)

- [The (internet) Shutdown Game](https://shutdowngame.apc.org/)
- [medien-sicher.de](https://www.medien-sicher.de/) (German)

## Programming

- [Google HTML/CSS Style Guide](https://google.github.io/styleguide/htmlcssguide.html)
- [Public Money, Public Code](https://publiccode.eu/)
- [Status of Python Versions](https://devguide.python.org/versions/)
- [Go by Example](https://gobyexample.com/)
- [The Crystal Programming Language](https://crystal-lang.org/)
- [SQL Island](https://sql-island.informatik.uni-kl.de/)
- [SQLite Playground](https://sqlime.org/)
- [Git Coach](https://github.com/vishal2376/git-coach) (Android App)
- [A community-curated collection of web services that work without JavaScript](https://jsfree.org/)
- [Oh Shit, Git!?!](https://ohshitgit.com/)
- [MessagePack](https://msgpack.org/)
- [Fernet](https://github.com/fernet/spec)
- [Connected UDP Sockets and ICMP Errors](https://josephmuia.ca/2018-04-25-connected-udp-sockets-and-icmp-errors/)
- [TUN/TAP interface (on Linux)](https://www.gabriel.urdhr.fr/2021/05/08/tuntap/)
- [Qlock - A JavaScript Quine Clock](https://aem1k.com/qlock/)

### Libraries

- [boost C++ libraries](https://www.boost.org/)
- [libsodium](https://doc.libsodium.org/)

### Arduino / IoT

- [Your fla- Your flash is now clean - There's always an edge case](http://michael-buschbeck.github.io/arduino/2013/10/22/string-merging-pstr-percent-codes/)
- [Contiki NG](https://www.contiki-ng.org/)

## Free Software

- [SPDX License List](https://spdx.org/licenses/)
- [I Love Free Software Day](https://ilovefs.org)

## Image galleries

- [GitHub Octodex](https://octodex.github.com/)
- [Malware](https://github.com/jiska2342/malware/)
- [Drawings by Shiro](https://shiro.ws/)
- [KawaiiLogos](https://github.com/SAWARATSUKI/KawaiiLogos)

## Videos

- [MediathekViewWeb](https://mediathekviewweb.de/)

## Deployment

- [Ansible - Migrating from with_X to loop](https://docs.ansible.com/ansible/latest/playbook_guide/playbooks_loops.html#migrating-from-with-x-to-loop)

## Archives

- [WinWorld Library](https://winworldpc.com/library/operating-systems)
- [Internet Archive](https://archive.org/)

## PasteBins

- [paste.i2pd.xyz](https://paste.i2pd.xyz/) (PrivateBin)
- [paste.burble.com](https://paste.burble.com/) / [paste.burble.dn42](https://paste.burble.dn42/) (PrivateBin)
- [paste.dn42.cc](https://paste.dn42.cc/) (PrivateBin)
- [g-load.eu/paste](https://g-load.eu/paste/)
- [paste.debian.net](https://paste.debian.net/)
- [p.pebkac.gr](https://p.pebkac.gr/) / [p.pebkac.dn42](https://p.pebkac.dn42/)
- [bin.disroot.org](https://bin.disroot.org/) (PrivateBin)

### Simple programming exercises

- [Sieve of Eratosthenes](https://wikiless.org/wiki/Sieve_of_Eratosthenes?lang=en)
- [Josephus problem](https://wikiless.org/wiki/Josephus_problem?lang=en)
- [Collatz conjecture](https://wikiless.org/wiki/Collatz_conjecture?lang=en)
- [Kaprekar Constant](https://www.geeksforgeeks.org/kaprekar-constant/)

- Implement a sorting algorithm
  - Bubblesort
  - Insertion sort
  - Selection sort
  - Quick sort (hard)
- Check if it is a ...
    - ... [Floyd's Triangle](https://wikiless.org/wiki/Floyd's_triangle?lang=en) [GeeksForGeeks](https://www.geeksforgeeks.org/program-to-print-floyds-triangle/) [Calculation (German)](https://test.mk16.de/projects/floyds_triangle.htm)
    - ... [Palindromic number](https://wikiless.org/wiki/Palindromic_number?lang=en)
    - ... [Ugly Numbers](https://www.geeksforgeeks.org/ugly-numbers/)
    - ... [Prime number](https://wikiless.org/wiki/Prime_number?lang=en)
    - ... [Leyland Number](https://www.geeksforgeeks.org/leyland-number/)
    - ... [Disarium Number](https://www.geeksforgeeks.org/disarium-number/)
    - ... [Abundant Number](https://www.geeksforgeeks.org/abundant-number/)
    - ... [Autobiographical number](https://www.geeksforgeeks.org/find-all-autobiographical-numbers-with-given-number-of-digits/)
    - ... [Emirp number](https://www.geeksforgeeks.org/emirp-numbers/)
    - ... [Pandigital number](https://www.geeksforgeeks.org/pandigital-number-given-base/)
    - ... [Magnanimous number](https://www.geeksforgeeks.org/magnanimous-numbers/)

## Programs

- [dns.chudo.i2p](https://github.com/wipedlifepotato/dns.chudo.i2p)

## Challenges

- [Gandalf Lakera - Prompt Injection](https://gandalf.lakera.ai/)
- [Project Euler](https://projecteuler.net/)

## Things, which are interesting, but I have not tested

- [Tunneling Internet traffic over WhatsApp](https://github.com/aleixrodriala/wa-tunnel)

## Things I want to read

- [The Very Unofficial Dummies Guide to Scapy](https://cybernomad.online/2012/05/31/scapy-guide-the-release/) ([PDF](https://raw.githubusercontent.com/catalyst256/scapy-guide/master/ScapyGuide.pdf)) (Partly outdated, uses Python2)

# Browser Add-Ons

- [uBlock Origin](https://github.com/gorhill/uBlock)
- [Privacy Badger](https://privacybadger.org/)
- [JShelter](https://jshelter.org/)
- [LocalCDN](https://www.localcdn.org/)
- [CanvasBlocker](https://github.com/kkapsner/CanvasBlocker)
- [ClearURLs](https://gitlab.com/ClearURLs/ClearUrls)
- [LibRedirect](https://libredirect.github.io/)
- [Skip Redirect](https://github.com/sblask/webextension-skip-redirect)
- [I don't care about cookies](https://www.i-dont-care-about-cookies.eu/)
- [Turbo Download Manager (3rd edition)](https://github.com/nickangeles/turbo-download-manager-v2/)

# Personality

- [Attraction Layer Cake](https://cake.avris.it/)
- [Gender & Sexuality Spectrum](https://spectrum.avris.it/)
- [Aprilkink (German)](https://aprilkink.home.blog/)
- [BDSM Test - Let's test the kink out of you!](https://bdsmtest.org/)
- [IDRlabs](https://www.idrlabs.com/) [Several piles of (pointless) (personality) tests]
- [geschlechtsneutrale Sprache - Sprache, die kein Geschlecht impliziert](https://www.draketo.de/politik/geschlechtsneutrale-sprache)
