ONLYOFFICE
Features: Online document editors, platform for document management, corporate communication, mail and project management tools. Read more: Data Security & Access Control -…
iOS Productivity
The Productivity we recommend, filtered to iOS. See all Productivity →
Vikunja
The project is still under development and the native apps are not final yet, but the web version works great. Offers an import feature from Todoist, Trello and Microsoft To-Do.