Best open-source alternatives to Buffer

Postiz is a social media management platform aimed at individuals and teams that need to schedule, automate, and analyze social content. It supports publishing across multiple social networks and emphasizes workflows that combine manual planning with automation and AI-assisted content creation. The project can be used as a hosted cloud service or self-hosted on the user's own infrastructure. The README highlights collaboration features for teams, analytics, integrations with automation tools like n8n, Make.com, and Zapier, and a public API plus SDKs for external integration. The self-hosted edition is positioned as a fully featured open-source deployment where users provide their own infrastructure and provider credentials.

Socioboard is an open source social media management and content marketing platform aimed at businesses, agencies, and teams that need to manage a presence across multiple social networks. The README describes it as a tool for creating, planning, and scheduling posts, coordinating team workflows, and generating analytics and reports to support marketing decisions. The project is presented as Socioboard Core, a customizable and extensible platform with a centralized API and a web application frontend, plus mobile apps on iOS and Android. It emphasizes multi-account management, team collaboration, permissions, automated posting, RSS-based content discovery, and email reporting. The README also notes a commercial SaaS version alongside the open source version.

Mixpost is a social media management platform aimed at businesses, marketing teams, agencies, and solo users who want to organize and automate their publishing workflow. It centralizes multiple social accounts, helps users plan and schedule posts, and provides analytics to track audience engagement across platforms. The project also emphasizes collaboration through workspaces, task assignment, permissions, and performance monitoring, making it suitable for teams that manage content together. The README presents it as the Lite version of Mixpost Pro, with a free MIT-licensed codebase and a separate commercial Pro/Enterprise offering.