A platform of currated travel guides by people all over the world
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A bot that keeps Trello cards in sync. There's also https://teams.cardsync.xyz/, a version that works as a Trello Power-Up. It is tied to Trello teams (so all team members can use) instead of to a single Trello user -- it also uses custom bots per team instead of a single global bot.
Simple crypto descriptions crowdsourced from the Twitter community
Zenbership is an open source membership CRM platform, designed to provide a central hub helping online businesses & organizations acquire, monetize, and retain members.