Alternatives to Spam Protection & Captcha

Minimalist captcha bot: private-message check for new members before they can post, plus basic anti-spam. Free, 10 thousand monthly users.

All-in-one entry protection: captcha, anti-raid mode, anti-flood and word/link filters for Russian-language chats. Free, 74 thousand monthly users.

The best-known standalone captcha bot for Telegram groups: button, math or custom question on entry, kicks whoever fails. Free, open, 207 thousand monthly users.

The most widely used free group manager: warns, mutes and bans, word filters, welcome messages with captcha, anti-flood and federations for networks of chats. English and dozens of languages, 2.3 million monthly users.

Free group manager with a button-driven setup: anti-spam, anti-flood, welcome with captcha, rules, media locks and user levels. Fully translated into Russian, 2.4 million monthly users.

All-in-one group admin bot: moderation, anti-spam, captcha, greetings and basic stats in one dashboard, trusted by over 500,000 admins. Free core, English interface.

International, open-source captcha bot: image or math verification for new group members. Free, multilingual, 18 thousand monthly users.

Single-purpose spam remover: deletes typical spam messages from groups and channel chats with almost no setup. Free, Russian interface, 16 thousand monthly users.

Behavioural moderation for Russian-language groups: mutes flooders, catches aggression and caps-lock spam, logs actions for admins. Free, Russian interface.

Simple entry-level captcha for Russian-language groups: bot adds a check-in challenge for newcomers before they can post. Free.

Puts new members in a temporary sandbox: their messages are hidden from the group until they prove they are not spam. Free.