Open Source Software for iOS
Jami
Jami is a free, open-source. universal distributed communication platform which preserves the user's privacy and freedoms. Jami supports a variety of video input options, including mutliple cameras and image and video files, and the selection of audio inputs and outputs with high quality audio and video codecs.
Turtl
Turtl is a note taking application that uses high-end cryptography to protect your data. Whether you're worried about information leaks, competitive advantage, or blanket government surveillance, Turtl works hard to make sure only you, and those you choose, can see your data.
Zulip
Zulip is an open-source real-time chat with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones. Zulip provides modern apps for every major platform, powered by Electron and React Native. The software is 100% open source software, built by a vibrant community of hundreds of developers from all around the world.
Master Password
Master Password is password manager based on an ingenious password generation algorithm that guarantees your passwords can never be lost. While most password managers store your passwords on a server or your local device, Master Password generates unique passwords on the fly, based on your username, the site or application and time. This approach makes Master Password safer from loss, theft, problems with backups, sync, confiscation, snooping, and more.
ProtonMail
World's largest secure email service providing end-to-end encrypted email accounts. ProtonMail is based in Geneva, Switzerland and protected by Swiss privacy laws. The software is openly developed with fully open source code.
LessPass
With LessPass you can manage your registrations, login and passwords with is. LessPass is a password manager that computes a unique password using a site, login, and a master password for you mobile Android or iOS device or as a browser extension for Google Chrome and Firefox. Since a password manager, or any software for that matter is as secure as it is transparent, the LessPass source code is available on Github and can be inspected and perfected by anyone in the community.
Internxt Drive
Internxt Drive is a secure file storage solution with a focus on user-friendliness and security. Internxt Drive allows you to store files, photos, videos in the cloud and sync or backup local files and make them available for sharing online. With Internxt Drive military-grade encryption you can rest assured that your files are in safe and only accessible by you.
Wallabag
With Wallabag you can save web articles and links and read them later. The application is developed and released as open source software and is avalible on your smart phone, tablet and desktop. Wallabag can be self-hosted for free, or used as a service for a monthly subscription.
Padlock
Padlock is an open source, cross-platform password manager that lets you syncronize passwords across platforms. With Padlock you can store your passwords saftley. Padlock is provided as a manage service for a monthly cost, or can be self-hosted on your own hardware or in the cloud.