Funnel is a simple CRM for small businesses and freelancers. It includes a form capturing component, an self-maintainable “address book”, and a sales funnel/deal pipeline management component.
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.
A tool for generating JSON APIs from any website, using XPath selectors and a dynamic recipes created in the designer online.
Search engine for programmers. Recalll is search engine which enable you to search programming queries from q&a sites, specifically from stackoverflow and stackexchange.