elliptic-lite - elliptic curve cryptography from scratch / zero - start with finite fields, add elliptic curve points and point addition and scalar multiplications, add the elliptic curve digital signature algorithm (ECDSA) using the secp256k1 curve / group to sign and verify messages and more

etherscan-lite - light-weight machinery / helper for the Etherscan (blockchain) JSON HTTP API / web services (note: API key sign-up required)

ethlite - light-weight machinery to query / call ethereum (blockchain contract) services via json-rpc (incl. tuple support)

ethlite-contracts - ready-to-use (blockchain) contract services / function calls for ethereum & co.

ethname - light-weight crowd-sourced "off-chain" ethereum name to (contract) address service / helper (incl. punks v1,v2,v3,v4; phunks v1,v2, synth punks, punk blocks, nouns, nouns descriptor, synth nouns, etc.) - yes, you can! - add more names / contracts via git ;-)

ImageScience is a clean and happy Ruby library that generates thumbnails -- and kicks the living crap out of RMagick. Oh, and it doesn't leak memory like a sieve. :) For more information including build steps, see http://seattlerb.rubyforge.org/

Isolate is a very simple RubyGems sandbox. It provides a way to express and automatically install your project's Gem dependencies.

Generate meme images using http://memegenerator.net! Save yourself some time!

merkletree - build your own crypto hash trees; named after Ralph Merkle who patented hash trees in 1979; grow your own money on trees

autotest is a continous testing facility meant to be used during development. As soon as you save a file, autotest will run the corresponding dependent tests. minitest-autotest is the latest incarnation of the venerable and wise autotest. This time, it talks to minitest via minitest-server. As a...

Hunting down random test failures can be very very difficult, sometimes impossible, but minitest-bisect makes it easy. minitest-bisect helps you isolate and debug random test failures. If your tests only fail randomly, you can reproduce the error consistently by using `--seed <num>`, but what t...

RinRuby is a Ruby library that integrates the R interpreter in Ruby, making R's statistical routines and graphics available within Ruby. The library consists of a single Ruby script that is simple to install and does not require any special compilation or installation of R. Since the library is 1...

rlp-lite - light-weight machinery to serialize / deserialze via rlp (recursive length prefix)

score-formats - read / parse and print sports match scores (incl. half time, full time, extra time, penalties and more)

solidity - (fuzzy) lexer & parser for (crypto) contracts for ethereum & co.

sportdb-config - sport.db configuration settings and built-in defaults

sportdb-formats - sport.db format and text utilities

sportdb-importers - tools 'n' scripts for importing sports (football) data in alternate (text) formats incl. comma-separated values (csv) format

sportdb-langs - sport.db language utilities

sportdb-models - sport.db schema 'n' models for easy (re)use