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Welcome to PLDB: a Programming Language Database!

PLDB is a comprehensive database of programming languages and their features. The focus is on programming languages, but the database also includes other languages and entities one degree away--from popular high level plain text formats to binary specifications and beyond.

PLDB is for two groups of people:

  1. Programming language creators. PLDB is organized big data to help you create great new languages, and improve existing ones. When making design decisions, quickly look up what features other languages have tried. Benefit from the experiences of thousands that have built languages before you. If you are researching something and can't find what you need here, you can add it and send a pull request, or share your request on Twitter.
  2. Programming language users. PLDB provides a data-driven view of the programming language universe, to demystify the world of programming languages for you, and provide sound strategic and tactical advice to help you in your projects and your career. If you have a question not answered by the data here, you can add it and send a pull request, or share your request on Twitter.


Want to get involved? Read more here.

Open source

All data and source code used to generate this site are on GitHub.

Web server

PLDB is an entirely static site. is served via GitHub Pages. You can clone the source to PLDB and build it locally and use PLDB entirely offline on your own machine.


This site is powered by information and software from so many people and organizations, a few of which are listed on the acknowledgements page.

Cloc Stats

Below are the cloc stats for the pldb repo as of 05/29/2024.

cd ..; cloc --quiet --vcs git . --read-lang-def=code/clocLangs.txt v 1.90 T=1.01 s (4945.4 files/s, 202458.8 lines/s) ------------------------------------------------------------------------------- Language files blank comment code ------------------------------------------------------------------------------- Scroll 4980 30447 0 169520 JavaScript 9 489 188 2778 JSON 3 0 0 685 Explorer 3 23 0 336 CSS 2 55 18 278 YAML 3 5 5 48 Bourne Shell 1 1 1 18 SVG 4 0 0 4 ------------------------------------------------------------------------------- SUM: 5005 31020 212 173667 -------------------------------------------------------------------------------


The URL for the official PLDB site is DNS will take that domain name and send your browser an IPv4 address. Your browser will send a request to that address which will reach a GitHub Pages server. That server will send you the HTML, CSS, Javascript, PNGs, SVGs and JSON that make up the built website.

In case there's a problem with GitHub pages, you should be able to access the exact same site locally by downloading the source from GitHub.

If GitHub Pages AND GitHub were to go down at the same time...well that's why it's good to regularly download the entire source code of the site to your own machine! You can do that with:

git clone # Then to keep it updated: cd pldb git pull


The site owes its existence to a kind (but firm) Internet commenter who told Breck Yunits to "learn to research properly" if he wanted to make his languages any good.


PLDB content is published to the public domain and you can use it freely. If needed, here are 3 options for citing PLDB:
PLDB contributors. (2024) - "PLDB: a Programming Language Database". Retrieved from: '' [Online Resource]
@article{pldb, author = {PLDB contributors}, title = {PLDB: a Programming Language Database}, journal = {PLDB}, year = {2024}, note = {} }

View source

- Build the next great programming language About Acknowledgements Published by Breck's Lab