Browser plugins

dillo-gemini, a Gemini plugin for the Dillo browser

cute-gemini, a Gemini userscript for Qutebrowser

Syntax highlighting for editors

text/gemini syntax highlighting for emacs

text/gemini syntax highlighting for kakoune

text/gemini syntax highlighting for nano

text/gemini syntax highlighting for vim

CGI applications

gemlikes, a liking and commenting system

git.gmi, a Gemini git frontend

Twinwiki, a Gemini wiki edited with sed commands

Feeds, Atom generators and aggregators

Atomini, a Ruby script to generate an Atom feed from a Gemini map

CAPCOM, an Atom feed aggregator that outputs text/gemini

Gemfeed, a tool to generate Atom feeds for a directory of text/gemini files

GMIToAtomFeed, a CGI tool to produce Atom feeds from Gemini index pages

Spacewalk, a moku-pona style aggregator for Gemini

Converters and parsers

gmi, a text/gemini parsing library

gemini-to-html, a simple Node JS module to convert text/gemini to HTML

html2gmi, a commandline application to convert HTML to GMI

html2gemini, a Go package to convert HTML to GMI

md2gemini, a Markdown to text/gemini converter

Other

Agena, a Gemini-to-Gopher proxy

Gemgit, a tool to generate static Gemini pages for git repos

gemini-fetch, a simple Node JS module to fetch Gemini content

Gig, a Gemini application framework in Go

Vostok, a protocol-agnostic framework supporting Gemini