Slack Alternatives for SaaS

A free, unlimited and open-source chat software. Rocket.Chat have set out to be a replacement for email, HipChat & Slack and is provided as Software-as-a-Service (SaaS) or a self-hosted community edition. Rocket.Chat is feature packed and can be used for video conferencing, file sharing, voice messages and more. The software integrates with third-party services like GitHub, GitLab, JIRA, and Confluence and provides an API that can be used for authentication and integration across these services.

Basecamp is a project management and collaboration tool that allows groups of people to share files, meet deadlines, assign tasks, and give feedback. The software is web-based an can be accessed from any device and anywhere as long as device has a web browser.

AirSend brings everything you need to get work done into a single, elegant workspace. It's a communication and collaboration tool that brings chat, voice and video calling, file sharing, task management, and more into one workspace so you can easily collaborate with team members and clients. With Airsend you can post messages, have voice/video calls, share and organize files, and complete projects together with your team. The free teir of AirSend workspace comes with 100 GB free storage.

Codegiant is a cloud-based software platform that provides fully integrated workflow for developers. The platform provides tools for project management of software development projects, including issue tracking, hosted Git repositories, continuous integration and documentation. By providing a unified, secure platform companies can focus on building software rather than setting up tooling and infrastructure. Allowing companies and their teams to work closer and better together and shipping projects to production faster. Codegiant is free for small teams up to 5 people, after that a monthly subscription per user is required to use Codegiant in your projects.