Here's a list of Fennel codebases you might be interested in:
Most Fennel games use LÖVE , a powerful 2D game framework.
Note that most of these games were created during the constraints of
various game jams, and thus often are thrown together quickly without
much concern for long-term readability.
See the Minimal LÖVE skeleton to serve as a starting point for making a new Fennel game on LÖVE
TIC-80 offers a 1980s-feeling environment to craft retro games.
P'engbot An IRC and Fediverse bot, active in #fennel on libera
Polywell A text editor and repl; originally written in Lua but in the process of being ported to Fennel
Shevek An nREPL client
fennel-lang.org The web site for Fennel itself; includes HTML generation and in-browser REPL with Fengari/JS integration.
tlog a timetrap inspired terminal time tracker
Spacehammer a Hammerspoon config inspired by Spacemacs
Antifennel Compile Lua to Fennel
fa A command-line agenda
wg A static website generator
fennel-todo A Todo app written in Fennel using Fengari and Mithril
apiales An unserious compiler for a C-ish language to a RISCV-ish architecture.
Taverner An IRC server
Just Browsing a rudimentary web browser (simple wrapper around WebkitGTK , using LGI )
monocle Simple RSS/Atom feed puller
SquirtleCI A tool to view CircleCI pipeline results from the shell.
anise utility library
ffs A file system library that doesn't require LuaRocks
iter A tiny (~50LoC) library for working with ipairs-style iterators
fennel-conditions Implementation of a subset of Common Lisp's condition system
fennel-test Unit testing library
itable Immutable table manipulation library
fennel-cljlib Functions and macros from clojure.core namespace
lazy-seq Sequence manipulation library with Clojure-like lazy sequences.
fspec A wrapper that tweaks LuaUnit for testing
faith Fennel Advanced Interactive Testing Helper (port of lunatest)
modest Musical harmony library.
Tools for working with Fennel code