Boltgram is described as 'Fast, secure and nice messaging app that uses Telegram’s API. You can enjoy all the features of Telegram, such as end-to-end encryption, cloud-based storage, group chats, channels, bots, stickers, and more. But that’s not all' and is a instant messenger in the social & communications category. There are more than 50 alternatives to Boltgram for a variety of platforms, including Android, iPhone, Mac, Windows and iPad apps. The best Boltgram alternative is Signal, which is both free and Open Source. Other great apps like Boltgram are Telegram, Element, Matrix and Tox.
Provides a chat experience over email, with all messages and contacts stored on user devices, open source code, group media support, and compatibility with any provider. No central servers, no tracking, works without SIM, and can be used by anyone just via email.
Germany
EU
Encrypted messenger supporting multi-platform access, unlimited group and private chats, file and voice message sharing, decentralized operation, open-source code, custom themes including dark mode, advanced moderation, push notifications, and no advertisements.
Switzerland
Offers secure messaging with end-to-end encryption, unlimited free calls, group chats for up to 250 members, rich media sharing, emoji reactions, AR lenses, self-destruct messages, affordable international calls, community channels, and robust privacy across devices.
Japan
Conversations is a privacy focused, open source XMPP Texting [Jabber] client for Android 4.0+ smart phones with wife-approved easy encryption [OTR, OMEMO, or GPG].
GermanyEU
Keybase is a new and free security app for mobile phones and computers. For the geeks among us: it's open source and powered by public-key cryptography.
United States
Linphone is one of the most famous open source softphones in the world. It is fully SIP-based, for all calling, presence and IM features.
FranceEU
Provides comprehensive communication features including group video calls, voice calls, fast messaging, photo sharing, and location mapping. Access through mobile and web platforms with real-time notifications, ensuring seamless interactions using multimedia tools.
United States
Trillian is an instant messaging app that works on phones, tablets, and desktops while keeping your chats neatly synchronized between all of them! We think conversation should be easily shared between all of your devices, not trapped as text messages on your phone.
United States
Centralize multiple chat and messaging services in one customizable interface, organize workspaces, receive synchronized notifications, manage multiple accounts per service, and easily access popular platforms on Mac, Windows, and Linux. Privacy controls included.
AustriaEU
XMPP, or Extensible Messaging and Presence Protocol, is an open standard for instant messaging and real-time communication, allowing for message exchanges between any two entities on the Internet. It's known for its decentralized and extensible nature.
Encrypted video meetings with unlimited participants, screen sharing, recording with secure storage, no data sale or registration, chat, reactions, calendar and background features, hosted entirely in Switzerland on renewable energy and compliant with strict privacy laws.
Switzerland
FaceTime is a video calling software feature developed by Apple for the iOS and Mac OS.
United States
