A rules engine you program, or protection that runs itself?

ChatKeeper is a moderation-first group-management bot that grew up in the Russian-speaking Telegram scene. Its documentation describes a genuinely deep configuration system: a trigger rules engine with conditions, actions, and chaining, dozens of content filters, a forms builder for structured member intake, a template scripting language in the message editor, and shared settings across an admin's groups. For a power admin who wants to program exactly how the group is run, that depth is the product.

Limzo starts from the opposite observation: most admins do not want to operate a console. Its anti-spam protection works from smart defaults — newcomer verification, scam-message and flood removal, a link safety scan that checks URLs against a continuously updated database of known phishing and malware sites, a fake-admin impersonator guard, /warn warnings with automatic enforcement, an optional language lock, and a cross-group network shield. The shield is a good example of the philosophy gap: ChatKeeper can share ban lists across the groups one admin manages, while Limzo's network shield automatically blocks spam links and senders already confirmed by admins across the whole Limzo network — every group benefits from what any group has caught, with zero setup, and your own allow lists always win.

Then there is the second job, which ChatKeeper does not attempt: Limzo turns activity into community analytics, quality-based karma, levels, badges, achievements, weekly awards, private admin reports, and a public stats profile members actually share. ChatKeeper's statistics live in an admin-only dashboard; there is no public community page to point newcomers at.

Choose ChatKeeper if: you want to define your own triggers, filters, entry forms, and scripted responses, and you are happy to invest real setup time in a custom system. Configuration depth is its strength, and Limzo does not try to replicate it.

Choose Limzo if: you want solid protection without a manual, and your bigger problem is a group that feels quiet or anonymous. One bot covers moderation, analytics, recognition, and weekly engagement — in 13 languages, with group posts following the group's language and each admin's reports following their own.

Use both if: you rely on ChatKeeper's custom rules but want Limzo's analytics, levels, and public profile. Give each bot one clear job and disable overlapping greetings and warning systems so members always know which bot does what.

On pricing, honestly: both products are priced per group. ChatKeeper's paid tiers are priced in rubles and its free plan shows ads inside your group's greetings. Limzo's free plan carries the entire protection stack with no ads in the group, ever — paid plans add capacity, history, and customization rather than basic safety. Feature sets and pricing change over time, so verify a critical workflow in each product before you commit.