Follow public Telegram channels without an account.
The second pass at the same idea as TeleStream, with the account taken out: add public channels by handle and read them as one feed, with the follow list held in the browser.
TeleStream worked, but it asked for a phone number and a Telegram session before it showed anything, which is a lot to ask of a reader.
FeedGram drops that entirely. You type a channel handle, it appears in the sidebar, and the posts show up. The follow list is yours and lives in your browser; nothing is stored server-side because there is no account to store it against.
Problem
The obvious route is the bot API, which requires the bot to be a member of every channel, impossible for channels you do not control, and the whole point was to read without joining.
Solution
The reader works from the public web preview each channel already exposes, so it only ever sees what is public anyway and needs no credentials at all.