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.
Best Telegram bots for Captcha & bot protection
These bots challenge every new member of a Telegram group with a quick puzzle — a button, a math problem, or a timed question — before they can post, filtering out the automated accounts that join to spam. They're a first line of defense, usually paired with a moderation bot.
The best Telegram bots for captcha and bot protection are Rose (@MissRose_bot) and Group Help (@GroupHelpBot): free group managers with welcome captcha, anti-flood and word filters, each used by over two million people a month, and Group Help is fully in Russian. Shieldy (@shieldy_bot) is the best-known standalone captcha bot, free and open, with button, math or custom-question checks on entry.
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.
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.
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.
All-in-one entry protection: captcha, anti-raid mode, anti-flood and word/link filters for Russian-language chats. Free, 74 thousand monthly users.
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.
72 / 100
Score
Minimalist captcha bot: private-message check for new members before they can post, plus basic anti-spam. Free, 10 thousand monthly users.
Simple entry-level captcha for Russian-language groups: bot adds a check-in challenge for newcomers before they can post. Free.
67 / 100
Score
Puts new members in a temporary sandbox: their messages are hidden from the group until they prove they are not spam. Free.
65 / 100
Score
Captcha plus a shared spammer database: blocks known bad accounts on join and challenges the rest. Free.
64 / 100
Score
Comparison
| # | Bot | Price | Languages | Inline | Groups | Score |
|---|---|---|---|---|---|---|
| 1 | Rose @MissRose_bot | Free | EN · RU · MULTI | no | yes | 87 |
| 2 | Group Help @GroupHelpBot | Free | EN · RU · MULTI | no | yes | 86 |
| 3 | Shieldy @shieldy_bot | Free | EN | no | yes | 82 |
| 4 | ChatKeeperBot @chatkeeperbot | Freemium | EN | no | yes | 76 |
| 5 | Защита от спама @ZashchitaOtSpamaBot | Free | RU | no | yes | 76 |
| 6 | The Join Captcha Bot @join_captcha_bot | Free | MULTI | no | yes | 75 |
| 7 | Удаление спама @SpamRemoverRobot | Free | RU | no | yes | 72 |
| 8 | Бот-модератор @Moderator_Rubot | Free | RU | no | yes | 72 |
| 9 | Капча для вашего чата @CaptchaAntiSpamBot | Free | RU | no | yes | 67 |
| 10 | Капча для групп и чатов @Captcha_Rubot | Free | RU | no | yes | 67 |
Neighbouring subtopics
How we chose
We joined a fresh test group with a newly created account five separate times, timing how long the captcha took to appear, what type it was (button tap, simple math, image, or delay-based), and how long before an unanswered account got kicked or muted. We also checked whether the challenge message could be edited into Russian and whether the bot silently deletes join/leave service messages, which spam accounts often trigger.
Captcha & bot protection
How to choose a captcha bot
The best captcha bots strike a balance: hard enough to stop scripted join-bots, easy enough that a real person doesn't rage-quit your group. A one-tap button ('I'm not a robot') filters out the crudest bots in under 2 seconds of user effort; a math or image captcha adds friction that also stops slightly smarter scripts. Check the timeout — most bots kick or restrict a user who doesn't respond within 60-120 seconds, and make sure that's configurable if your group is slow-paced.
What to check before trusting a bot
Since the bot needs to restrict and remove members, it requires admin rights, so treat the choice the same way you would an anti-spam bot — check its uptime reputation and whether it logs data beyond what's needed to run the challenge. Test what a restricted (unverified) user can and can't do: ideally they can read but not post until they pass the check, rather than being invisible to the group entirely.
Free vs paid
Free plans almost always include the core captcha-on-join flow for one or a few groups. Paid tiers add customizable challenge types, longer group limits, whitelisting by invite link (so members from a trusted link skip the captcha), and combined anti-spam rules in one panel. For most communities, a free button-tap or math captcha removes the bulk of bot joins without needing to pay.
Frequently asked questions
Is a captcha bot for Telegram free?
Yes, the join-captcha flow itself is free in almost every bot we checked, usually limited to a handful of groups managed by one account.
Does captcha stop spam messages too, or only bot accounts joining?
Captcha alone only filters who can join and post — it doesn't scan message content, so it's usually paired with an anti-spam or moderation bot for full coverage.
Can I set the captcha text in Russian for my group?
Most captcha bots let you customize or translate the challenge and welcome message, including into Russian, through the bot's settings panel or a slash command.