Alternatives and similar repositories for firs:

Users that are interested in firs are comparing it to the libraries listed below

• andythenorth / iron-horse
  Iron Horse
  ☆23Updated this week
• EmperorJake / AXIS
  ☆16Updated 9 months ago
• JGRennison / OpenTTD-patches
  OpenTTD - http://www.openttd.org/ - with additional patches
  ☆622Updated this week
• OpenTTD / nml
  NewGRF Meta Language
  ☆48Updated 2 weeks ago
• OpenTTD-JPplus / JPengines
  JP+ Engines and Wagons. Formerly known as Japanese Secret Engines
  ☆21Updated 3 months ago
• OpenTTD-JPplus / JPplusPrivate
  ☆13Updated last month
• 2TallTyler / itl_houses
  A house replacement set for OpenTTD. Formerly known as Improved Town Layouts.
  ☆33Updated last week
• OpenTTD-JPplus / JPplusMU
  JP+ Multiple Units is a NewGRF for OpenTTD, bringing new and refreshing JGR, JNR and JR multiple units to the game.
  ☆28Updated 3 months ago
• mattkimber / timberwolfs_trains
  A maximalist set of UK trains for OpenTTD
  ☆14Updated 3 months ago
• citymania-org / grf-py
  A Python framework for making NewGRFs for OpenTTD
  ☆16Updated 4 months ago
• citymania-org / cmclient
  CityMania OpenTTD patched client
  ☆29Updated 2 months ago
• EmperorJake / XIS
  Extreme Industry Set for OpenTTD
  ☆14Updated 2 years ago
• 2TallTyler / improved_town_industries
  An industry replacement set for OpenTTD.
  ☆26Updated last week
• DFHack / stonesense
  A retro isometric visualizer for Dwarf Fortress
  ☆375Updated last week
• zephyris / opengfx2
  Base graphics set for OpenTTD
  ☆61Updated 2 weeks ago
• Kromtec / LegendsViewer
  Recreates Dwarf Fortress' Legends Mode from exported files.
  ☆65Updated 4 months ago
• Dwarf-Therapist / Dwarf-Therapist
  Dwarf management tool for Dwarf Fortress
  ☆659Updated 2 weeks ago
• aidansean / OpenTTD_surveyor
  A tool for making map images from OpenTTD save games
  ☆16Updated last year
• DFgraphics / Spacefox
  [16x16] Spacefox v40.x
  ☆92Updated 4 years ago
• StarRaid / Representitive-UK-Trainset
  ☆10Updated last month
• rschurade / Ingnomia
  ☆244Updated last year
• GarlicBread42 / GETS
  German Extrazoom Trainset for OTTD
  ☆10Updated 7 months ago
• cortex-command-community / Cortex-Command-Community-Project-Data
  [ARCHIVED] The future of Cortex Command
  ☆111Updated last year
• ss13remake / ss13remake
  a sadly defunct ss13 remake
  ☆140Updated 10 years ago
• SmashPhil / Vehicle-Framework
  Core mod for Vehicles
  ☆59Updated this week
• jamespetts / simutrans-extended
  Sources for the Experimental branch of the popular game Simutrans
  ☆85Updated 2 months ago
• stolencatkarma / CataclysmLD
  Cataclysm: Looming Darkness
  ☆143Updated last year
• thurin / df-twbt
  Text Will Be Text
  ☆56Updated last year
• cortex-command-community / Cortex-Command-Community-Project-Source
  [ARCHIVED] Cortex Command - Open Source under GNU AGPL v3 (no game data included)
  ☆204Updated last year
• DFHack / df-structures
  Dwarf Fortress data structure descriptions
  ☆121Updated 2 weeks ago