This is cool. Telegram also has a Premium feature which crawls the contents of (presumably) all public channels on the platform. It's limited to 10 searches per day and doesn't search for old content if there are too many retrieved posts.

I’ve spent the last 3 months building a crawler to index the public parts of Telegram (https://telehunt.org). The native search is essentially a black box that favors the top 0.1% of bot almost invisible. The Tech: I had to deal with rate limits and the lack of a global 'sitemap'. I’m currently using a hybrid approach of metadata scraping to keep the index fresh. The Goal: It’s an experiment in making 'un-indexable' bot data discoverable.

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