Alternatives and similar repositories for 2020:

Users that are interested in 2020 are comparing it to the libraries listed below

• nullcon / hackim-2020
  Sources for challenges of Nullcon's HackIM 2020
  ☆57Updated 2 years ago
• Super-Guesser / ctf
  ☆109Updated 2 years ago
• justcatthefish / justctf-2019
  justCTF 2019 challenges sources
  ☆37Updated 3 years ago
• stypr / my-ctf-challenges
  My CTF challenges (2018~)
  ☆28Updated last year
• redpwn / redpwnctf-2020-challenges
  CTF challenges from redpwnCTF 2020
  ☆60Updated 4 years ago
• mdsnins / ctf-writeups
  My CTF write-ups!
  ☆27Updated 2 years ago
• icchy / wctf2019-gtf
  WCTF2019 challenge: Gyotaku The Flag
  ☆41Updated 5 years ago
• w181496 / My-CTF-Challenges
  My CTF Challenges
  ☆24Updated last year
• rkmylo / ctf-write-ups
  CTF Writeups
  ☆37Updated 6 years ago
• InsecurityAsso / inshack-2019
  Source code, descriptions and writeups of INS'hAck 2019 CTF challenges!
  ☆33Updated 5 years ago
• st98 / my-ctf-challenges
  Challenges I created for CTFs
  ☆24Updated last month
• unicornsasfuel / sqlite_sqli_cheat_sheet
  A cheat sheet for attacking SQLite via SQLi
  ☆96Updated 8 years ago
• chaitin / Real-World-CTF-3rd-Challenge-Attachments
  Challenge attachments for RWCTF 3rd.
  ☆91Updated 3 years ago
• lanjelot / ctfs
  notes and code on past CTFs
  ☆100Updated 3 years ago
• cgvwzq / css-scrollbar-attack
  PoC for leaking text nodes via CSS injection
  ☆36Updated 6 years ago
• BSidesSF / ctf-2019-release
  BSidesSF CTF 2019 release
  ☆72Updated last year
• BookGin / my-ctf-challenges
  CTF challenges I created
  ☆37Updated 3 years ago
• pwn2winctf / challenges-2020
  Pwn2Win 2020 Challenges
  ☆55Updated 3 years ago
• AeroCTF / aero-ctf-2021
  ☆27Updated 2 years ago
• Asuri-Team / ctf-xinetd
  A docker image to hold pwn challenges in ctf war
  ☆52Updated 6 years ago
• ZeddYu / Public-CTF
  Collect public CTF source code repo
  ☆45Updated 3 years ago
• osirislab / CSAW-CTF-2018-Quals
  Repo for CSAW CTF 2018 Quals challenges
  ☆38Updated 6 years ago
• terjanq / Flag-Capture
  Solutions and write-ups from security-based competitions also known as Capture The Flag competition
  ☆99Updated 4 years ago
• eboda / 35c3
  Challenges I created for 35c3
  ☆48Updated 6 years ago
• BlackFan / ctfs
  CTF writeups
  ☆30Updated 2 years ago
• w181496 / CTF
  My CTF writeups
  ☆100Updated last month
• whitesquirrell / C0deVari4nt
  A variant analysis and visualisation tool that scans codebases for similar vulnerabilities
  ☆70Updated 2 years ago
• SniperOJ / Jeopardy-Dockerfiles
  Dockerfiles of CTF Challenges running on SniperOJ
  ☆148Updated last year
• Blaklis / my-challenges
  Those are my challenges for multiple CTF!
  ☆10Updated 10 months ago
• Geluchat / chrome_v8_exploit
  A collection of 1days and solutions to challenges related to v8/chrome I developed
  ☆155Updated 5 years ago