huginn
open-source IFTTT
Discourse
next-generation discussion platform
forem
the platform that powers dev.to
Chatwoot
customer engagement platform
Postal
mail delivery platform for incoming and outgoing e-mail
Octobox
GitHub notification manager
Errbit
open source, self-hosted error catcher
Fat Free CRM
a clean, customizable CRM
lobsters
link-aggregation site, inspired by Hacker News
Feedbin
open-source feed reader for multiple platforms
sharetribe
Marketplace platform
Helpy
A Modern Helpdesk Alternative
Loomio
make decisions together
Staytus
status pages
Hound
Your code, always in style.
Duckrails
tool to mock API endpoints
Catarse
open-source crowdfunding platform
Snippet Manager
manage your snippets
samson
Web interface for deployments
OneBody
church management software
Brimir
an email helpdesk
Classroom
automates repository creation and access control for teachers
CodeTriage
directory of open-source projects with open issues
consul
open government and participation software
Cuttlefish
a good-enough SMTP server so you can ditch SMTP providers
Tracks
software for implementing David Allen's Getting Things Done™ methodology
Juvia
commenting server of the likes of Discus or IntenseDebate
libraries.io
open-source discovery service
Hours
Time registration that doesn't suck.
OpenFarm
open database for farming and gardening knowledge
Open-Source Event Manager
event management tool tailored to conferences
Open Source Billing
Beautifully Simple Billing Software
ActiveWorkflow.org
turn complex requirements to workflows
adopt-a-hydrant
adopt-a-hydrant software
iNaturalist.org
social network for nature stuff
HellRaiser
vulnerability scanner
rubytoolbox.com
catalog of all Rubygems that keeps track of popularity and health metrics
Haven
self-hostable private blogging
Envizon
network visualization and pentest reporting
Morph.io
web scraping tool
Growstuff
tool for small-scale food growers
AppPerf
application and performance monitoring tool
Concerto
digital signage system
datorss.com
RSS search
Alaveteli
easy FOIA requests for any jurisdiction
LearnAwesome.org
social network of learners
Plylst
Spotify playlist tool
Lewsnetter
email marketing application
Notebook.ai
structured writing tool
Ekylibre
farm management information system
Central
Fulcrum project planning tool fork
SmartVPN Billing
billing management for hosting
Upcase.com
learning platform for programming
Bike Index
the internet's bike registry
World Cube Association
everything for the World Cube Association
Calls For Proposal App
manage a conference CFP
Coderwall
Professional network for software engineers
Gwaphics
graphic design tool
Expertiza
peer-reviews app, supported by the National Science Foundation
Helpful
simple and elegant support system
tip4commit.com
reward contributors
openSNP
annotate your SNP-set
fromthepage.com
crowdsource handwritten documents
Trado
simple e-commerce platform for developers
Notebook Gallery
enterprise Jupyter notebook sharing and collaboration platform
Amahi
your personal cloud and media server
Email Dashboard
email suite for marketing and CRM
Reservations
equipment loans and reservations software
Barong
auth server
Coursemology
open-source gameified learning platform
TimeOverflow
time banking system
Airesis
eDemocracy
FederalRegister.gov
daily journal for the United States Government
Intercity
web-based Dokku deployment
Texterify.com
translation and localization management
Fairmondo
free market place in the hand of the users
Do Continuous Integration Yourself
open-source CI server
EasyRaceLapTimer
open-source IR lap time tracker
Listed.to
online publications with automatic newsletters
Droptune
music notifications for Spotify and Apple Music
brief-ideas
journal for brief ideas
CrimeThinc.com
the app that powers this website
Drug Gene Interaction Database
The Genome Institute's drug gene interaction database
CodeCuriosity.org
platform to reward OSS contributors
FeedBunch
simple and elegant reader
TagTeam
social tagging for academics
ebwiki.org
database of police abuse cases against people of color
BareMetrics.com
v1 of baremtrics.com
planningalerts.org.au
planning alerts for Australians
TaxonWorks
workbench for biodiversity informatics
StockAid
manages inventory for the Grateful Garment Project
pinballmap.com
source code to pinballmap.com
Huboard.com
better GitHub issues
AirCasting
platform for gathering, visualization and sharing of environmental data
Pokr
agile estimating and planning
Sanataro
household accounting software
sumofus.org
source code to sumofus.org
nokul
solution for universities to manage all the complex procedures of a university online
Racing On Rails
bike racing association management
uk-postcodes
postcodes application
FleetYards
A Ship Database and Web API based on the official Star Citizen Ship Matrix
Registry
TLD management software
Abalone
data tracking and analytics for conservation efforts
Punchclock
simple electronic punch clock
HRMS
HR management
Hackathon Manager
hackathon registration and logistics
Lale Help
collaborative platform for refugee support
Recipy.fr
defunct website of a recipe site
Case File Editor
editor for digital case files