2315 Like Skype Good alternative? YES NO An instant messaging app that provides online text message and video chat services. Freemium Mac Windows Linux Web Android iPhone Blackberry Chrome OS ... Windows RT Android Tablet BSD Windows Phone iPad Apple Watch Android Wear PortableApps.com Video calling Share your screen IFTTT integration Microsoft Office integration Video calling Voice Call Add a feature Can't handle same functionality. Do not integrate with other services Guest • Jan 2017 • 15 agrees and 0 disagrees Disagree Agree No teams. Everybody has to add everybody. No search functionality. No nothing. Guest • Dec 2016 • 15 agrees and 2 disagrees Disagree Agree Not "out of the box" secure / encrypted. Used it for 8 years and I decided to "grow up' into secure communication apps. To many wont send a letter thru the postal service without an envelope but throw a tantrum if anyone suggests to them use "secure / end to end encryption." Skype is one that bulks at any real security and acts like "deer in the headlights at anything...above 256 Bits or otherwise. Guest • Mar 2017 • 5 agrees and 0 disagrees Disagree Agree It is one-to-one focused. Can't form teams easily. Guest • Jun 2017 • 2 agrees and 0 disagrees Disagree Agree Lacks integration capability. Microsoft does not guarantee availability. Message history storage is questionable in the recent versions. No teams. Guest • Jul 2017 • 1 agrees and 0 disagrees Disagree Agree Only similiarity is that you can chat and call, nothing else. Slack is so much more superior with channels, integrations, search. Guest • Jul 2017 • 1 agrees and 0 disagrees Disagree Agree Great video chat options and solid chat client for teams, we use it. Ola • Oct 2016 • 1 agrees and 4 disagrees Disagree Agree
87 Like Mattermost Good alternative? YES NO Mattermost is an open source, self-hosted Slack alternative. As an alternative to proprietary SaaS messaging, Mattermost brings... Free Open Source Mac Windows Linux Android iPhone Android Tablet iPad Self-Hosted ... JavaScript Go (Programming Language) Cloudron Team collaboration Data API Group chat Integrated File Sharing MarkDown support On-premises software ... Plugin API Slack integration Add a feature Its the same but you keep your server where you want so no one is playing with your data, and you can have an unlimited history depending on what you need for free so really way better ! Guest • May 2017 • 1 agrees and 0 disagrees Disagree Agree It is very much a Slack clone with added features + is open source! Guest • May 2017 Disagree Agree 1. Open source 2. Most of the same functionality 3. Secure and private server possibilities (the data is, therefore, yours until the end of time). 4. Extra features when it comes to customization, a big difference actually. Only negative is that Slack look a lot better design wise, so you can't customize it optimally. Guest • May 2017 Disagree Agree
97 Like Riot.im Good alternative? YES NO Riot (formerly Vector) is an opensource interoperable app running on Web, iOS and Android. It is built around chat rooms, both public and private and provides messaging... Free Open Source Linux Web Android iPhone iPad Self-Hosted Chrome Safari ... F-Droid Firefox End-to-end encryption Matrix.org protocol Built-in File transfer Decentralized Encrypted chat GitHub integration ... Group chat Group collaboration Server Moderation Server side history Slack integration Team collaboration Video calling Voice Call Add a feature
116 Like Wire Good alternative? YES NO Wire is a secure and private messenger for phones, tablets and desktop. Crystal clear voice and video calls, private group chats, file sharing, audio and video messages... Free Open Source Mac Windows Linux Web Android iPhone Android Tablet iPad End-to-end encryption Encrypted calls Encrypted chat Group chat Integrated File Sharing Photo Sharing ... Share your screen Security focused Video calling Voice Call WebRTC Add a feature
59 Like Rocket.Chat Good alternative? YES NO Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework. Free Open Source Mac Windows Linux Android iPhone Self-Hosted Cloudron Ad-free Chat Bot Extensible by Plugins/Extensions Group chat Integrated File Sharing Location Mapping ... Share your screen Voice messages Add a feature
47 Like Matrix.org Good alternative? YES NO Matrix is an open standard for decentralized persistent communication over IP. It can be used for decentralised group chat, WebRTC signaling, IoT-data transfer, ... Free Open Source Mac Windows Linux Web Android iPhone Android Tablet iPad ... Self-Hosted WebRTC Python JavaScript Go (Programming Language) Java Perl Chat Bot Decentralized Encrypted chat End-to-end encryption Group chat Real time collaboration ... Server side history Team collaboration WebRTC Add a feature
63 Like HipChat Good alternative? YES NO HipChat is an instant messaging service designed for companies and teams. It has persistent chat rooms, one-to-one chat, searchable chat history, file sharing via drag... Freemium Mac Windows Linux Web Android iPhone Android Tablet iPad ... Self-Hosted Apple Watch Integrated File Sharing Share your screen Team collaboration Add a feature
146 Like Glip Good alternative? YES NO Glip is instant messaging for teams and businesses to communicate and get work done at the same time. In Glip you work where your conversations are, so you always know... Freemium Mac Windows Web Android iPhone Android Tablet iPad Social feed Bitbucket Integration Box.com integration Built-in File Manager Calendar view Dropbox integration ... GitHub integration Google Drive integration Group chat Group collaboration Mailchimp integration Meeting notes Onedrive integration Real time collaboration Recurring tasks Share your screen Shared calendars Team collaboration Team work Trello integration Zapier integration Zendesk integration Add a feature Has practically all of slack's features, plus tasks, calendar, etc. And the free account does not limit number of users or storage. Guest • Jun 2016 • 2 agrees and 0 disagrees Disagree Agree
163 Like Basecamp Good alternative? YES NO Basecamp is a web-based project collaboration tool that allows groups of people to share files, meet deadlines, assign tasks, and centralize feedback. Commercial Mac Windows Web Android iPhone iPad Content Templates Gantt-charts Sync with Google Calendar iCal integration Support for @mentions Outlook integration ... Real time collaboration Social feed Add a feature Slack is a communication/chat tool. Basecamp is project management. Guest • Aug 2017 • 1 agrees and 0 disagrees Disagree Agree
33 Like Let's Chat Good alternative? YES NO Self-hosted chat for small teams. Features and Stuff BYOS (bring your own server) Persistent messages Multiple rooms New message alerts /... Free Open Source Self-Hosted Cloudron Team collaboration Add a feature
53 Like Quip Good alternative? YES NO Quip is a modern word processor that enables you to create beautiful documents on any device, including the iPad, iPhone, and the desktop. It combines documents and... Commercial Mac Windows Android iPhone Android Tablet iPad Real time collaboration Content Templates Export to Google Spreadsheets IFTTT integration Integrated Chat Support for @mentions ... Works offline too Real time collaboration Slack integration Add a feature
23 Like Zulip Good alternative? YES NO Zulip is a group chat app. Its most distinctive characteristic is that messages are threaded by topic, helping you have long-running, organized conversations.... Free Open Source Mac Windows Linux Web Android iPhone BSD Self-Hosted GitHub integration Group chat Group collaboration Integrated File Sharing Team collaboration Add a feature
23 Like TribeScale Good alternative? YES NO TribeScale is a startup that aims to enhance teamwork in companies through the improvement of communication, coordination, and the pace on the basis of targets set. Free Mac Windows Web Android iPhone iPad Self-Hosted Goal setting Goal Tracking Group chat Group collaboration Real time collaboration Team collaboration ... Team work Add a feature
20 Like Gitter Good alternative? YES NO Gitter is a chat and collaboration tool for developers and users. It's a place for developers to talk. KEY FEATURES - Unlimited public chat rooms for free -... Free Open Source Mac Windows Linux Web Android iPhone Real time collaboration Add a feature
33 Like Google Groups Good alternative? YES NO Google Groups is all about helping users connect with people, access information, and communicate effectively over email and on the web. Now theres a new version on the... Free Web No features added Add a feature
