OpenIM vs mesibo

OpenIM8.7Visit mesibo8.6Visit

Higher score OpenIM #7 in Chat APIs 8.7/10 Free plan Free plan✓ 4 of 4 features Visit OpenIM

vs

mesibo #8 in Chat APIs 8.6/10 Free plan · 30-day trial Free planFree trial✓ 4 of 4 features Visit mesibo

• OpenIM fits best

  Self-hosted large-scale group chat

• mesibo fits best

  Chat apps needing calls and self-hosting

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Side by side

Feature	OpenIM 8.7/10 Visit ↗	mesibo 8.6/10 Visit ↗
At a glance
Editor score	8.7	8.6
Ranking	#7 in Chat APIs	#8 in Chat APIs
Best for	Self-hosted large-scale group chat	Chat apps needing calls and self-hosting
Pricing model	Free	Free plan + paid
Starting price	Free	$49/mo
Free plan	✓	✓
Free trial	—	30 days
Deployment	Cloud, Mobile, Self-hosted	Cloud, Desktop, Mobile, Self-hosted
Platforms	Web, iOS, Android	Web, Windows, macOS, Linux, iOS, Android
Integrations	7 integrations	4 integrations
Features OpenIM 4/4 · mesibo 4/4
Presence support	✓	✓
Typing indicators	✓	✓
Push notifications	✓	✓
Moderation tools	✓	✓
Specs
SDK platforms	Web, iOS, Android, Flutter, React Native, uni-app, Electron, C/C++, Unity	Android, iOS, Flutter, JavaScript, Python, C++, Linux, macOS, Windows, Raspberry Pi, ARM64
Delivery methods	Online push, offline push, offline message synchronization, multi-device synchronization	Real-time delivery, offline message delivery, push notifications, webhooks
Message history	Not checked yet	Not checked yet
Our review
Pros	Supports groups of up to 100,000 members Offers offline messages and multi-device synchronization Includes Server APIs, webhooks, and rich message types	Supports messaging, voice and video calls, and conferencing Offers cloud, on-premise, and self-hosted deployment options Includes webhooks, moderation hooks, and blocking APIs
Cons	Business and Enterprise editions use contact-sales licensing Advanced voice and video features are limited to Enterprise The integration set is focused rather than broad	The Free plan is limited to non-commercial use Production accounts have a $49 monthly minimum Usage pricing varies with monthly active users and deployment type
Our verdict	OpenIM is open-source communication infrastructure for developers adding in-app chat and messaging to web, mobile, desktop, and cross-platform applications. Its self-hosted server components, client SDKs, Server APIs, and webhooks cover… Read the review →	mesibo is a real-time communication platform for developers adding one-to-one and group messaging, presence, typing indicators, offline delivery, voice and video calling, conferencing, and chatbot features to mobile, web, desktop, backend,… Read the review →

Strengths and trade-offs

• OpenIM — where it wins

  • Supports groups of up to 100,000 members
  • Offers offline messages and multi-device synchronization
  • Includes Server APIs, webhooks, and rich message types

  Where it doesn't

  • Business and Enterprise editions use contact-sales licensing
  • Advanced voice and video features are limited to Enterprise
  • The integration set is focused rather than broad

• mesibo — where it wins

  • Supports messaging, voice and video calls, and conferencing
  • Offers cloud, on-premise, and self-hosted deployment options
  • Includes webhooks, moderation hooks, and blocking APIs

  Where it doesn't

  • The Free plan is limited to non-commercial use
  • Production accounts have a $49 monthly minimum
  • Usage pricing varies with monthly active users and deployment type

• OpenIM8.7/10 · Free plan

  A self-hosted chat stack for large groups, synchronized messaging, and developer control.

  Visit OpenIMFull verdict →
• mesibo8.6/10 · Free plan · 30-day trial

  A broad real-time communications API for teams that need calls and self-hosting.

  Visit mesiboFull verdict →