Alternatives to chatstep
Telegram. Telegram is a messaging app with a focus on speed and security. Telegram is a messaging app with a focus on speed and security. It's superfast, simple and free.
Tox. Send messages, files, create groups and make Tox to Tox audio and video calls. Tox is easy-to-use software that connects you with friends and family without anyone else listening in. While other big-name services require you to pay for features, Tox is completely free and comes without advertising forever.
Riot.im. Communicate the way you want with Riot - a universal secure chat app entirely under your control. Riot.im is an very open source, free software with or without instant messaging client based on the Matrix protocol. Riot.im is totally free software and distributed under the Apache License 2.0. Because it uses the federated Matrix protocol, Riot.im lets the user choose a server to connect to.
Jami - the distributed and open source communication platform.
ChatSecure - Unlike other apps that keep you stuck in their walled garden, ChatSecure is fully interoperable with other clients that support OMEMO or OTR and XMP.
Threema - Threema is ad-free, and it will always stay that way. The company is fully funded by its app sales and by corporate customers' subscriptions.
Wickr - The company is best known for its beautiful instant messenger application of the same name. The Wickr instant messaging apps now allow users to exchange point to point or end-to-end encrypted and content-expiring messages, including hidden photos, videos, and file attachments and place end-to-end some encrypted video conference calls.
Off-the-Record Messaging - Off-the-Record (OTR) Messaging allows you to have private conversations over instant messaging by providing: Encryption: No one else can read your instant messages online.