Here is a list of all known Gemini-related software. The list is not curated: some of these programs may be non-functional, or may be unmaintained. You have to evaluate them yourself. If you've written some Gemini software which is not listed here, please contact me at solderpunk@posteo.net.
=> A Gemini server written in Go | A Gemini server written in Node, based on Express | Aerozine, a Gemini server written in Rust, focussed on configurability | Agate, a Gemini server written in Rust | Blizanci, a Gemini server writen in Erlang | Dʒɛmɪni, a Gemini server written in Racket | GeGoBi, a Gemini server for Gemini-Gopher bi-hosting | Geminid, a Gemini server written in C | Gemini-PHP, a Gemini server written in PHP | Gemserve, a Gemini server written in Rust | Germinal, a Gemini server written in Common Lisp | GLV-1.12556, a Gemini server (in fact, the first!) written in Lua | gmid, a low-memory Gemini server written in C with interesting security features | gmnisrv, a simple Gemini server written in C11 | Jetforce, a Gemini server written in Python | (The Unsinkable) Molly Brown, a Gemini server written in Go | Net-Gemini, a Gemini server written in Go | Northstar, a Rust library for Gemini servers | Pollux, a Gemini server written in Rust | Space Age, a Gemini server written in Clojure | SpaceBeans, a Gemini server written using Scala and Akka streams | Stargazer, a concurrent Gemini server written in Rust | Titan2, a minimal Gemini server written in Go | Twins, a Gemini server written in Go | Vger, a simplistic and secure Gemini server in C targetting OpenBSD
=> A bare-bones but usable Gemini client in 100 lines of Python | A bare-bones but usable Gemini client in 100 lines of Lua | A bare-bones but usable Gemini client almost 100 lines of Go | A Gemini client library in Guile Scheme | A Gemini client for Android | A Gemini client library in Go | A more recent fork of the above library | A rich Gemini client library in Nim | Agregore, a "distributed web" browser supporting Gemini | Amfora, a very feature-rich Germini client for the terminal | AmiGemini, a Gemini client for the Commodore Amiga | Ariane, a Gemini client for Android | Astro, a Gemini client written in shell script | Astronaut, a terminal Gemini client written in Go | Asuka, a ncurses-based Gemini client | AV-98, an experimental Gemini client derived from VF-1 | Bollux, a Gemini client written in pure Bash | Bombadillo, a multi-protocol client handling Gemini since 2.0.0 | Castor, A graphical Gemini client written in Rust | Cgmnlm, a colorful fork of gmni | Deedum, a Gemini client for Android | Diohsc, a terminal Gemini client written in Haskell | Dragonstone, a simple GTK Gopher/Gemini client written in Vala | Elaho, a Gemini client for iOS | elpher, a emacs-based Gopher and Gemini client | Fafi, a graphical, tabbed client written in Racket | gacme, a Gemini client for plan9's Acme | gcat, a cat-like Gemini client | Gemget, a command-line Gemini downloader ala wget | GemiNaut, a user-friendly GUI client for MS Windows | Geopard, a client written in rust, using the gtk3 toolkit | Gmi, a client written in POSIX-compliant shell | gurl, a curl-like Gemini client | Gusmobile, a Gemini client library in Python | gmni, a combined CLI and line-mode client for POSIX/C11 | Kristall, a graphical Gemini client using Qt | Lagrange, a beautiful graphical Gemini client written in C | majc, a curses client for Gemini written in Rust | McRoss, a graphical Gemini client written in Python/Tkinter | Moonlander, a very fancy graphical Gemini client written in Rust | ncgopher, a Gopher and Gemini client written in Rust | Rhapsode, an "auditory web browser" which supports Gemini | Spwash, a bare-bones Gemini client written in C# | Twin Peaks, a graphical Gemini client written in C# | Tinmop, a distraction free terminal client for Gemini (and Pleroma!) | Zain, a graphical Gemini client written in Tcl/Tk
=> dillo-gemini, a Gemini plugin for the Dillo browser | cute-gemini, a Gemini userscript for Qutebrowser
=> text/gemini syntax highlighting for emacs | text/gemini syntax highlighting for kakoune | text/gemini syntax highlighting for Kate | text/gemini syntax highlighting for nano | text/gemini syntax highlighting for vim
=> gemlikes, a liking and commenting system | git.gmi, a Gemini git frontend | GMIToAtomFeed, a CGI tool to produce Atom feeds from Gemini index pages | Twinwiki, a Gemini wiki edited with sed commands
=> gemini-to-html, a simple Node JS module to convert text/gemini to HTML | gemtext-html-converter, a Gemtext to HTML converter in Python | gmitohtml, a command line tool and daemon for converting txt/gemini to html | gmi2mkd, a Gemtext to Markdown converter in awk | html2gmi, a command line application to convert html to text/gemini | md2gemini, a Markdown to text/gemini converter
=> A Go library for implementing both clients and servers | Agena, a Gemini-to-Gopher proxy | Agunua, a Python library for the development of Gemini clients | 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 | 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 | git-remote-gemini, a Git remote helper to clone git repositories over Gemini | gmi, a text/gemini parsing library | gmisub, a tool to aggregate content from subscribable Gemini pages | gmnigit, a to generate static Gemini pages for git repositories | HtmGem, a PHP program to convert text/gemini to HTML on the fly | Ignition, a Gemini client library for Python | Kineto, a single-domain HTTP to Gemini proxy | Spacewalk, a moku-pona style aggregator for Gemini | Vostok, a protocol-agnostic framework supporting Gemini | Xenia, a Gemini web proxy for Android This content has been proxied by September (3851b).Proxy Information
text/gemini; charset=utf-8