Comparison · checked October 16, 2026

Harbor vs Buffer

The short answer

Buffer is the better choice if you want a polished hosted scheduler today: 12 platforms including TikTok and YouTube Shorts, mobile apps, a free tier, and team approvals on its Team plan. Harbor is the better choice if you want an open-source tool you can self-host, run several brands with a separate voice and baseline for each, and have agents plan the week from what actually performed, with every post waiting for your approval.

At a glance

Harbor and Buffer, side by side.

Feature	Harbor	Buffer
What it is	An open-source content strategist for builders with more than one brand	“Social media management for everyone”, a hosted scheduler
Open source	Yes, AGPL-3.0; self-hostable	No; hosted only
Price	Self-host free; Cloud opening soon at $19 (2 brands), $49 (6), $149 (25) a month	Free for 3 channels; Essentials about $5 and Team about $10 per channel a month on annual billing
Priced by	Brand	Connected channel
Platforms	X, LinkedIn, Instagram, Threads	12, including TikTok, YouTube Shorts, Facebook, Pinterest, Bluesky, Mastodon
Mobile apps	No (web app)	iOS and Android
Brand voice	Per brand, learned and refined from what performed, with evidence	Business description and manual tone controls
Best times	Learned per brand from its own posts	Recommended times from when your audience is active
Measurement	Every post at 1h, 6h, 24h, 3d and 7d against the brand’s median at the same age; weekly digest	Reach, engagement and top posts; advanced analytics on 4 channel types
Approvals	Required for everything agents propose, on every plan	Approval workflows on the Team plan
Agents and MCP	Built-in agents plus an MCP server; proposals only	AI Assistant in the composer; MCP server and API

Buffer details are from its own site and docs, checked October 16, 2026. Prices and features change; see the sources below.

Choose Harbor if

You want open-source software you can self-host, with your tokens and data on your server.
You run several brands and want each judged against its own baseline.
You want the week planned from what performed, not just a queue to fill.
You want pricing that counts brands, not every connected channel.

Choose Buffer if

You want a hosted product that works today, with no developer apps to register.
You post to TikTok, YouTube Shorts, Facebook or Pinterest.
You want native mobile apps.
You want a free plan to start, or a team of collaborators with roles.

The differences that matter

Where they differ.

01Hosted vs your own serverBuffer runs everything for you. Harbor runs where you choose, under the AGPL, with Harbor Cloud coming for those who’d rather not host.

02A queue vs a planBuffer fills a queue at recommended times. Harbor’s weekly plan reads last week’s results, picks open best-time slots, drafts and proposes, and waits for you.

03How results are judgedHarbor compares each post with the brand’s own median at the same age, so a 6-hour-old post isn’t compared with a week-old one.

04BreadthBuffer supports 12 platforms and mobile apps. Harbor supports 4, deliberately.

FAQ

Questions people ask.

Is Harbor an open-source alternative to Buffer?

Yes. Harbor is open source under the AGPL and can be self-hosted, and it schedules and publishes to X, LinkedIn, Instagram and Threads.

Does Harbor have a free plan?

Self-hosting is free with every feature. Harbor Cloud, when it opens, has no free tier; Buffer has a free plan for 3 channels.

Does Harbor support TikTok or YouTube?

No. Harbor supports X, LinkedIn, Instagram and Threads. Buffer covers TikTok and YouTube Shorts.

Which is cheaper for several brands?

It depends on channels per brand. Buffer charges per channel; Harbor Cloud will charge per brand, so a brand on four platforms counts once.

Sources, checked October 16, 2026

Something out of date? Email hello@useharbor.io and we’ll fix it.

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Plan next week in an afternoon.

Self-host Harbor free, or get early access to Harbor Cloud. Either way, nothing posts until you say so.

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