Alternatives to HelloUserBot

Anti-spam bot with configurable welcome buttons: greets and can auto-remove its own welcome message after a delay. Free, Russian interface.

Long-running group management bot with a strong rules and welcome focus: description on command, anti-flood and custom triggers. Free.

Long-form welcome messages for new chat members: no length limit on the greeting text. Free.

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.

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