ClickSend
ClickSend is a simple, global SMS platform built for developers and the businesses they support. Built on a battle-tested API that always delivers with:
- Billions of messages delivered globally
- Direct routes only to 190+ countries
- 99.95%+ uptime
- Lightning-fast delivery
- Pay-as-you-go pricing — no lock-ins
- 24/7 support from people who actually understand APIs
- It works straight out of the box — and keeps working as you scale.
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Perfect for: alerts, 2FA codes, marketing campaigns and transactional messaging.
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AVOXI
The effective, affordable, and easy-to-use cloud-based call center software, AVOXI Genius. Easily manage your business communications from an intuitive, web-based contact center. AVOXI Genius is the first platform to integrate your contact center solution with your voice service, with virtual phone numbers available for instant activation in 170+ countries. With plans starting at $19.99 per user, AVOXI Genius is one of the most affordable solutions worldwide! Get 2 months free--limited time only.
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Weavy
The complete in-app collaboration API and SDK. Add contextual activity feeds, chat, and document collaboration directly into your apps to increase user engagement, improve in-app retention, and reduce customer churn. All Weavy features include integrations to the third party tools your users are already familiar with: add capabilities for Zoom and Teams video conferencing, Google Drive, Dropbox, or Box file sharing, document sync and versioning contextually inside your app. Weavy allows app developers to quickly add the features that users need to be productive and interactive, directly within the app environment. With our SDK and APIs, you can deploy chat, feeds, and document sync in a matter of days, not months, and at a fraction the cost to build in-house. Focus on your core product while simultaneously adding functionality that makes your user experience not only better, but increases user engagement and dependency on your app.
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Unipile
Unipile is a unified API designed to integrate multiple communication channels, messaging, email, calendar, and more, into your software application. It provides over 500 endpoints that enable developers to connect platforms such as LinkedIn, WhatsApp, Instagram, Gmail, Outlook, and IMAP into a single unified inbox. With Unipile, you can send and retrieve messages across channels, manage calendars (Google/Outlook), sync conversations in real time, and maintain full historical context across channels. The API supports functions such as starting chats, retrieving message threads, scheduling events, and connecting profile data, all through the same interface. Use-cases include ATS/CRM software publishers, outreach tools, no-code builders, and AI agent platforms, anywhere multi-channel communication needs to be embedded into an application. Unipile also emphasizes rapid integration, developer-friendly documentation, and live support.
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