Alternatives

Products that do what Caffeine – Minimum viable back end for prototyping does

1AI
An isometric marble run build in CoffeeScript▲141
2011 · marbleo.us
2DC
Decaffeinate converts CoffeeScript projects to modern JS▲361
2017 · github.com
3
Origami▲109
A free design prototyping toolkit for Quartz Composer
2013
4AT
A tool to create printable UI mockups and wireframes templates▲155
2019 · github.com
5
Prototypo▲83
Streamlining font creation with open source typeface editor
2014
6SA
Squiggle – A Sketch library for making low-fidelity wireframes▲59
2020 · ui8.net
7FA
FontEdit – A desktop app to develop fonts for embedded systems displays▲130
2020 · github.com
8AS
A side project in medical devices▲267
2018 · chrisseaton.com
9MD
Material Design for Bootstrap – Powerful and Free Material Design UI KIT▲164
2016 · mdbootstrap.com
10
Precursor▲227
A real-time collaborative prototyping tool
2014
11PI
Prototypr.io V2 – The Swiss army knife for designers▲15
2018 · prototypr.io
12SF
Scribble Font for Prototyping and Wireframing▲5
2018 · vladocar.github.io
13
Wake Annotations▲110
A more powerful way to give design feedback
2017
14
Mitya▲87
Prototyping for Interaction Designers
2014
15AB
A Build System for Packaging Applications in LXC Containers▲105
2018 · flockport.com
16GR
Guided Recipe Creation▲79
2011 · recipelabs.com
17
Composé▲91
An editor for creating interactive iOS prototypes and apps
2015
18
Framer▲121
Prototyping tool for animation and interaction
2014
19PB
Physics-based CAD▲104
2016 · prandtl.design
20PB
Pinecone – Build your own genetically-encoded tools▲81
2017 · serotiny.bio
21DA
Design and Simulate Molecules in Virtual Reality▲66
2018 · store.steampowered.com
22PA
Precursor, a lightweight prototyping tool with real-time collaboration▲10
2014 · prcrsr.com
23GF
GUIs for Faster ML Prototyping and Sharing▲85
2020 · github.com
24
Flux▲70
Design and generate iOS transitions
2014

Ranked by how close each launch is in meaning, then by votes. Refine with a description →