Is Kap or Syncthing better?

Neither clearly leads. Kap starts at Free and Syncthing at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Kap or Syncthing?

Kap starts at Free and Syncthing at Free.

Does Kap or Syncthing run on more platforms?

Kap runs on Mac. Syncthing runs on Windows, macOS, Linux, Android, Docker.

Can I use Kap for free?

Both have a free tier, so you can try either at no cost before committing.

What is Kap best used for?

Kap is most often used for a developer recording a demo gif for a readme or documentation page, a marketer capturing a quick product walkthrough clip without buying screen recording software, someone creating app store style device-framed screenshots for a listing, a user who only needs video capture and does not want to pay for a suite of annotation features they will not use. Of those, a developer recording a demo gif for a readme or documentation page and a marketer capturing a quick product walkthrough clip without buying screen recording software are not what Syncthing is typically brought in for.

What can Kap do that Syncthing cannot?

Kap covers Multi-format export, Area, window or display capture, Plugin system, Basic trimming. Syncthing covers Peer-to-peer sync, Encrypted transport, File versioning, Selective sync.

Utilities · head to head

Kap vs Syncthing

Kap

Utilities

Free open source screen recorder for macOS, focused on video and GIF capture rather than annotation

From: Free
Rated: -

Full review Website

Syncthing

Utilities

Continuous file synchronisation between your own devices

From: Free
Rated: -

Full review Website

The short version

Each has a real cost: Kap it has no annotation tools at all, so any still-image markup work needs a separate app such as Shottr or CleanShot X.; Syncthing synchronisation, not backup: a deletion propagates to every device, and versioning must be configured deliberately
They diverge on capability: Kap covers Multi-format export, Syncthing covers Peer-to-peer sync.
Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Kap and Syncthing actually diverge.

Attributes where Kap and Syncthing differ
Attribute	Kap	Syncthing
Platforms	Mac	Windows, macOS, Linux, Android, Docker

Identical on both: starting price (Free), pricing model (Open source, no licence fee), free tier (Yes), user rating (Not yet rated), category (Utilities).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Kap

Multi-format export
Area, window or display capture
Plugin system
Basic trimming
Menu bar operation
Open source

Only in Syncthing

Peer-to-peer sync
Encrypted transport
File versioning
Selective sync

What people use each for

The jobs each tool is most often brought in to do.

Kap

A developer recording a demo GIF for a README or documentation pagenot Syncthing
A marketer capturing a quick product walkthrough clip without buying screen recording softwarenot Syncthing
Someone creating App Store style device-framed screenshots for a listingnot Syncthing
A user who only needs video capture and does not want to pay for a suite of annotation features they will not usenot Syncthing

Syncthing

Keeping files in step across personal machines without a cloud accountnot Kap
Syncing data that must not sit on a third-party server for policy reasonsnot Kap
Replacing a paid cloud storage subscription for sync-only needsnot Kap

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Kap

It has no annotation tools at all, so any still-image markup work needs a separate app such as Shottr or CleanShot X.
There is no scrolling capture or OCR, features both Shottr and CleanShot X include.
Editing is limited to basic trimming, so anything beyond a simple cut needs a dedicated video editor afterward.
It is Mac only, offering nothing for screen recording needs on Windows.
As a volunteer-maintained open source project, updates and bug fixes depend on community contribution rather than a company with paid support obligations.

Syncthing

Synchronisation, not backup: a deletion propagates to every device, and versioning must be configured deliberately
Devices must be online simultaneously to sync, so an always-on machine is effectively required
Initial setup involves exchanging device IDs and is less approachable than signing into a cloud service
No web access to files, since there is no server holding them

Pricing, plan by plan

Kap

Free

KapFree
- Free and open source under the MIT licence
- MP4, WebM, GIF and device frame export
- Plugin system for extended workflows

Syncthing

Free

SyncthingFree
- Full functionality
- No usage limits
- Community support

Which should you pick?

Choose Kap if

You need multi-format export.
You want to start without paying.
You work on Mac.
You also want area, window or display capture.

Kap review

Choose Syncthing if

You need peer-to-peer sync.
You want to start without paying.
You work on Windows, macOS, Linux, Android, Docker.
You also want encrypted transport.

Syncthing review

Questions people ask

Is Kap or Syncthing better?: Neither clearly leads. Kap starts at Free and Syncthing at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Kap or Syncthing?: Kap starts at Free and Syncthing at Free.
Does Kap or Syncthing run on more platforms?: Kap runs on Mac. Syncthing runs on Windows, macOS, Linux, Android, Docker.
Can I use Kap for free?: Both have a free tier, so you can try either at no cost before committing.
What is Kap best used for?: Kap is most often used for a developer recording a demo gif for a readme or documentation page, a marketer capturing a quick product walkthrough clip without buying screen recording software, someone creating app store style device-framed screenshots for a listing, a user who only needs video capture and does not want to pay for a suite of annotation features they will not use. Of those, a developer recording a demo gif for a readme or documentation page and a marketer capturing a quick product walkthrough clip without buying screen recording software are not what Syncthing is typically brought in for.
What can Kap do that Syncthing cannot?: Kap covers Multi-format export, Area, window or display capture, Plugin system, Basic trimming. Syncthing covers Peer-to-peer sync, Encrypted transport, File versioning, Selective sync.

Answered from the vendors’ own pages

Kap: Is Kap free?

Yes, entirely. It is open source under the MIT licence with no paid tier.

Syncthing: Is Syncthing free?

Yes, open source with no licence fee and no storage costs, because there is no server.

Kap: Does Kap do screenshots or only video?

It is focused on video and GIF recording. For still screenshots with annotation, pair it with Shottr or CleanShot X.

Syncthing: Is Syncthing a backup tool?

No. It synchronises, so deletions propagate. Use it alongside a real backup, not instead of one.

Kap: Can Kap export directly to GIF?

Yes, GIF is one of its native export formats alongside MP4, WebM and Apple device frames.

Syncthing: Do my files pass through anyone else’s servers?

No. Transfers are peer to peer and encrypted. Discovery and relay servers can help devices find each other, and relayed traffic remains encrypted end to end.

Kap vs Syncthing

Kap

Syncthing

The short version

Where they differ

What each one covers

Only in Kap

Only in Syncthing

What people use each for

Kap

Syncthing

Where each one falls short

Kap

Syncthing

Pricing, plan by plan

Kap

Syncthing

Which should you pick?

Choose Kap if

Choose Syncthing if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Kap

More on Syncthing

Keep looking

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