abiparser - application binary interface (abi) parser machinery / helper for Ethereum & Co. (blockchain) contracts

abidump gem - command-line tool to dump / pretty print or (re)format application binary interfaces (abi) for Ethereum & Co.

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)

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 ;-)

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

pixelart - yes, you can! generate your own pixel art images (off-blockchain) using any design (in ascii text) in any colors; incl. 2x/4x/8x zoom for bigger sizes

artbase-cocos - artbase (shared) code commons (cocos); read artbase collection configs & metadata; download collection token metadata, images, and more

calldata gem - Calldata.encode / Calldata.decode using utf8_to_hex and hex_to_utf8 helpers and more for inscriptions / inscribes for ethereum & co

ethscribe - inscription / inscribe (ethscription calldata) api wrapper & helpers for Ethereum & co.

gemverse gem - gem universe incl. rubygems API V1 wrapper lite; gem version cache, gem timeline reports, 'n' more

ordinals gem - ordinals (inscription) api wrapper & helpers for Bitcoin, Litecoin, Dogecoin & co.

rsssf - tools 'n' scripts for RSSSF (Rec.Sport.Soccer Statistics Foundation) archive data

satsnames - sats names helpers for bitcoin ordinal inscription names, relays and more

unisat - unisat.io lite helpers for full-text search in bitcoin ordinal inscriptions

football-timezones - time & timezone helpers for football (league) data

sportdb-helpers - parsers & readers and more for structs incl. countries, leagues, clubs, grounds, et al

sportdb-parser - football.txt match parser (& tokenizer)

webget gem - a web (go get) crawler incl. web cache

wikiscript - scripts for wikipedia (get wikitext for page, parse tables 'n' links, etc.)