Revel
Open-source event management, ticketing and membership platform for communities, clubs, independent venues and independent artists.
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docassemble
A free, open-source expert system for guided interviews and document assembly, based on Python, YAML, and Markdown.
Bitpoll
Conduct polls about dates, times or general questions.
Fider
Open platform to collect and prioritize feedback (alternative to UserVoice).
Apprise
Apprise allows you to send a notification to almost all of the most popular notification services available to us today such as: Telegram, Discord, Slack, Amazon SNS, Gotify, etc.
ArchiveBox
Create HTML & screenshot archives of sites from your bookmarks, browsing history, RSS feeds, or other sources (alternative to Wayback Machine).
Bitcart
Cryptocurrencies payment processor and development platform.