Smartsheet is not available as a self-hosted solution but there are plenty of alternatives for power users and business that want to host a solution on-premise. The best Self-Hosted alternative is Redmine, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Smartsheet and many of them are available as a self-hosted solution so hopefully you can find a suitable replacement. Other interesting Self-Hosted alternatives to Smartsheet are OpenProject (Freemium, Open Source), LibrePlan (Freemium, Open Source), Bitrix24 (Freemium) and ZenTao (Freemium, Open Source).
OpenProject is an open-source project management software with a wide set of features and plugins. It supports project timelines / Gantt charts, issue tracking, wiki, document management, time and cost reporting, code management, Scrum and much more.
ZenTao is an open source project management tool, supporting Scrum. It integrates product management, project management, bug management and QA management, etc., covering all lifecycle of software development.
Baserow is an open source online database. Create your own database without technical experience. Our user friendly no-code platform gives you the powers of a developer without leaving your browser. Hosted and self hosted version available.
Leantime is a project management system for small teams and startups. Designed to help you manage your projects from ideation to delivery. Leantime's Idea Manager allows you to store ideas, communicate them with team members, discuss and move them from idea to validation.