Signal
5.0 out of 5 stars
(2 Ratings)
Fast, simple, secure. Privacy that fits in your pocket. Send high-quality group, text, voice, video, document, and picture messages anywhere in the world without SMS or MMS fees. Signal messages and calls are always end-to-end encrypted and painstakingly engineered to keep your communication safe. We can't read your messages or see your calls, and no one else can either. Keep your chat history tidy with messages that you can set to disappear. Choose different disappearing message intervals for each conversation. Everyone in the thread shares the same setting. Good memories will last even if the words vanish. Signal is made for you. As an Open Source project supported by grants and donations, Signal can put users first. There are no ads, no affiliate marketers, no creepy tracking. Just open technology for a fast, simple, and secure messaging experience. The way it should be.
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Google Hangouts
4.5 out of 5 stars
(26 Ratings)
Use Hangouts to keep in touch. Message contacts, start free video or voice calls, and hop on a conversation with one person or a group. Include all your contacts with group chats for up to 150 people. Say more with status messages, photos, videos, maps, emoji, stickers, and animated GIFs. Turn any conversation into a free group video call with up to 10 contacts. Call any phone number in the world (and all calls to other Hangouts users are free!). Connect your Google Voice account for phone calling, SMS texting, and voicemail integration. Keep in touch with contacts across Android, iOS, and the web, and sync chats across all your devices. Message contacts anytime, even if they’re offline.
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Sunbird
No complicated or complex technical workarounds. No need to own any Apple products. The Sunbird app is fully encrypted while SMS text messages are not. The Sunbird servers do not store user data promoting a safe, secure, and private messaging environment. With end-to-end encrypted, confidential messaging, Sunbird is fully secure and completely private. By adding encryption between Android and iMessage where there currently is none, Sunbird is the first of its kind to give a unified and safe messaging experience to Android users. Sunbird takes less than a minute to set up and less than 5 minutes to add iMessage on Android.
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Slack
4.6 out of 5 stars
(250 Ratings)
Slack is a work collaboration platform that brings people, apps, data, and AI agents together in one shared workspace. It helps teams communicate through channels, direct messages, huddles, Slack Connect, files, canvases, lists, workflows, and integrations. The platform includes Slackbot, a context-aware AI agent that can summarize conversations, search across messages and files, prepare users for meetings, analyze documents, and help complete tasks without leaving Slack. Slack also supports connected apps such as Salesforce, Google Drive, GitHub, Zoom, Asana, Box, Workday, ChatGPT, and many others. Teams can use Workflow Builder to automate stand-ups, project updates, approvals, notifications, and routine business processes. With enterprise search, AI assistance, secure collaboration, and a large integration ecosystem, Slack helps organizations stay aligned, move faster, and reduce work scattered across disconnected tools.
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