What it is
The project describes itself as: “Open Source Continuous File Synchronization”E1 It's written mainly in Go (files: go, json, js, yml).E1 The latest release (v2.1.6) has downloads for FreeBSD, Linux, Windows and macOS.E4 89381 people starred it on GitHub; the code was last updated 2026-10-13.E3
Where your data goes
CDNs & hosting Deliver files (scripts, images) quickly from servers near you.
1
raw.githubusercontent.com GitHub Pages / raw files : static file hosting
1×E10
Not identified Services we don't have in our list yet.
8
github.com not identified
11×E7 E27
api.github.com not identified
6×E11 E31
go.dev not identified
3×E25
hosted.weblate.org not identified
2×E22
protobuf.dev not identified
1×E30
qr.swtch.com not identified
1×E35
updates.maxmind.com not identified
1×E21
xkcd.com not identified
1×E19
What it can do on your computer
No tracking SDKs found
None of its dependencies is a known analytics, telemetry or crash-reporting library. Signals: dependency scan.E1
dependency scan
Local database
Keeps a database file on your computer. Signals: local database.E5
local database
File watching
Notices when files on your computer change. Signals: watches files for changes.E6
watches files for changes
What it's built from
Libraries in its dependency files that tell you something about what it does. The many ordinary ones are left out.
Library What it's for Declared in
sqlxE5 local database go.mod:21
notifyE6 watches files for changes go.mod:36
The app you download
We downloaded syncthing-linux-amd64-v2.1.6.tar.gz (11.8 MB) from the project's latest release and read it without running it.
syncthing
Format ELF · 26.8 MB
Libraries 0
Web addresses 13: upgrades.syncthing.net, relays.syncthing.net, go.dev, discovery-lookup.syncthing.net, github.com, discovery-announce-v4.syncthing.net, discovery-announce-v6.syncthing.net, protobuf.dev, api.github.com, docs.syncthing.net, data.syncthing.net, crash.syncthing.net, qr.swtch.com
E36
The latest release (v2.1.6) has downloads for FreeBSD, Linux, Windows, macOS.
Evidence
Every sentence above points to one of these. Code references show the file, line:column and the short identifier that matched, never the site's code itself.
E1
Repository: syncthing/syncthing
Open Source Continuous File Synchronization
GitHub description · https://github.com/syncthing/syncthing
E2
Licence: Mozilla Public License 2.0
GitHub license · https://github.com/syncthing/syncthing
E3
89381 stars, last push 2026-10-13
GitHub activity · https://github.com/syncthing/syncthing
E4
Latest release v2.1.6 (2026-10-06) with 35 files
GitHub release · https://github.com/syncthing/syncthing/releases/tag/v2.1.6
E5
Depends on sqlx (local database)
go.mod @ 21:None · “sqlx” · manifest scan
E6
Depends on notify (watches files for changes)
go.mod @ 36:None · “notify” · manifest scan
E7
Web address in source: github.com/golang/go/issues/27089
build.go @ 399:81 · “github.com/golang/go/issues/27089” · source scan
E8
Web address in source: syncthing.net/
build.go @ 644:13 · “syncthing.net/” · source scan
E9
Web address in source: crash.syncthing.net/report/
cmd/infra/stcrashreceiver/sentry.go @ 25:23 · “crash.syncthing.net/report/” · source scan
E10
Web address in source: raw.githubusercontent.com/syncthing/syncthing/
cmd/infra/stcrashreceiver/sourcecodeloader.go @ 23:21 · “raw.githubusercontent.com/syncthing/syncthing/” · source scan
E11
Web address in source: api.github.com/repos/syncthing/syncthing/releases
cmd/infra/stupgrades/main.go @ 38:53 · “api.github.com/repos/syncthing/syncthing/releases” · source scan
E12
Web address in source: relays.syncthing.net/endpoint
cmd/strelaysrv/main.go @ 62:22 · “relays.syncthing.net/endpoint” · source scan
E13
Web address in source: docs.syncthing.net
gui/default/syncthing/core/syncthingController.js @ 3437:24 · “docs.syncthing.net” · source scan
E14
Web address in source: discovery-lookup.syncthing.net/v2/
lib/config/config.go @ 57:4 · “discovery-lookup.syncthing.net/v2/” · source scan
E15
Web address in source: discovery-announce-v4.syncthing.net/v2/
lib/config/config.go @ 58:4 · “discovery-announce-v4.syncthing.net/v2/” · source scan
E16
Web address in source: discovery-announce-v6.syncthing.net/v2/
lib/config/config.go @ 64:4 · “discovery-announce-v6.syncthing.net/v2/” · source scan
E17
Web address in source: data.syncthing.net/newdata
lib/config/config_test.go @ 78:32 · “data.syncthing.net/newdata” · source scan
E18
Web address in source: upgrades.syncthing.net/meta.json
lib/config/config_test.go @ 80:32 · “upgrades.syncthing.net/meta.json” · source scan
E19
Web address in source: xkcd.com/221/
lib/config/optionsconfiguration.go @ 244:14 · “xkcd.com/221/” · source scan
E20
Web address in source: announce.syncthing.net/
lib/discover/doc.go @ 59:19 · “announce.syncthing.net/” · source scan
E21
Web address in source: updates.maxmind.com
lib/geoip/geoip.go @ 90:23 · “updates.maxmind.com” · source scan
E22
Web address in source: hosted.weblate.org/api/components/syncthing/gui/statistics/
script/weblatedl.go @ 48:15 · “hosted.weblate.org/api/components/syncthing/gui/statistics/” · source scan
E23
Web address inside the released app: upgrades.syncthing.net/meta.jsonbug
syncthing @ byte 0x34eba · “upgrades.syncthing.net/meta.jsonbug” · string scan
E24
Web address inside the released app: relays.syncthing.net/endpointTotal
syncthing @ byte 0x3aa56 · “relays.syncthing.net/endpointTotal” · string scan
E25
Web address inside the released app: go.dev/doc/godebug
syncthing @ byte 0x3e44c · “go.dev/doc/godebug” · string scan
E26
Web address inside the released app: discovery-lookup.syncthing.net/v2/
syncthing @ byte 0x41d5f · “discovery-lookup.syncthing.net/v2/” · string scan
E27
Web address inside the released app: github.com/urfave/cli/blob/master/CHANGELOG.mdconverting
syncthing @ byte 0x433b2 · “github.com/urfave/cli/blob/master/CHANGELOG.mdconverting” · string scan
E28
Web address inside the released app: discovery-announce-v4.syncthing.net/v2/
syncthing @ byte 0x44920 · “discovery-announce-v4.syncthing.net/v2/” · string scan
E29
Web address inside the released app: discovery-announce-v6.syncthing.net/v2/
syncthing @ byte 0x44958 · “discovery-announce-v6.syncthing.net/v2/” · string scan
E30
Web address inside the released app: protobuf.dev/reference/go/faq
syncthing @ byte 0x450c8 · “protobuf.dev/reference/go/faq” · string scan
E31
Web address inside the released app: api.github.com/repos/syncthing/syncthing/releases
syncthing @ byte 0x4c6c9 · “api.github.com/repos/syncthing/syncthing/releases” · string scan
E32
Web address inside the released app: docs.syncthing.net/users/versioning.html
syncthing @ byte 0x540e6 · “docs.syncthing.net/users/versioning.html” · string scan
E33
Web address inside the released app: data.syncthing.net/newdata
syncthing @ byte 0xc70fe7 · “data.syncthing.net/newdata” · string scan
E34
Web address inside the released app: crash.syncthing.net/newcrash
syncthing @ byte 0xc7c332 · “crash.syncthing.net/newcrash” · string scan
E35
Web address inside the released app: qr.swtch.com/
syncthing @ byte 0x1904510 · “qr.swtch.com/” · string scan
E36
REA identified syncthing as elf (sha256 d72663e4f9ef…)
syncthing · “d72663e4f9efe0b8” · REA inspect-artifact
Limits
We read the app's code and its official download without running it. Code that exists may never run for you, and behaviour decided by servers is invisible. Web addresses and libraries show what the app can talk to or do, not that it does so every time you use it. Only open-source apps with a public GitHub repository are analysed. The release we inspected may differ from builds in app stores.
This text was written from fixed templates because no AI writer was available. It uses exactly the same evidence.
Facts, not judgements: this page describes what the code and traffic show, not anyone's intent. Not financial advice. Case id ull4trda.