Source: https://seerepo.com/compare/signalapp/Signal-Android/vs/thunderbird/thunderbird-android
Markdown source: https://seerepo.com/compare/signalapp/Signal-Android/vs/thunderbird/thunderbird-android.md
Description: Signal-Android and thunderbird-android share 14 technologies: Jetpack Compose, core-ktx, lifecycle-livedata-ktx, lifecycle-process, lifecycle-runtime-compose, lifecycle-viewmodel-savedstate, Google, androidx.appcompat:appcompat, androidx.constraintlayout:constraintlayout, androidx.window:window, androidx.preference:preference, androidx.camera:camera-view, androidx.biometric:biometric, and com.google.zxing:core. Both are written in Kotlin.

# Signal-Android vs thunderbird-android

Signal-Android and thunderbird-android share 14 technologies: Jetpack Compose, core-ktx, lifecycle-livedata-ktx, lifecycle-process, lifecycle-runtime-compose, lifecycle-viewmodel-savedstate, Google, androidx.appcompat:appcompat, androidx.constraintlayout:constraintlayout, androidx.window:window, androidx.preference:preference, androidx.camera:camera-view, androidx.biometric:biometric, and com.google.zxing:core. Both are written in Kotlin.

- [signalapp/Signal-Android](https://seerepo.com/r/signalapp/Signal-Android): A private messenger for Android.
- [thunderbird/thunderbird-android](https://seerepo.com/r/thunderbird/thunderbird-android): Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail)

## What they share and what sets them apart

- In common: Jetpack Compose, core-ktx, lifecycle-livedata-ktx, lifecycle-process, lifecycle-runtime-compose, lifecycle-viewmodel-savedstate, Google, androidx.appcompat:appcompat, androidx.constraintlayout:constraintlayout, androidx.window:window, androidx.preference:preference, androidx.camera:camera-view, androidx.biometric:biometric, com.google.zxing:core
- Only in Signal-Android: androidx.navigation3:navigation3-runtime, androidx.navigation3:navigation3-ui, androidx.lifecycle:lifecycle-viewmodel-navigation3, androidx.compose.runtime:runtime-livedata, androidx.navigation:navigation-compose, sqlite-framework, androidx.sqlite:sqlite, Firebase, fragment-ktx, lifecycle-common-java8, navigation-fragment-ktx, navigation-ui-ktx, org.jetbrains.kotlin:kotlin-stdlib-jdk8, Airbnb, com.google.android.flexbox:flexbox, gridlayout, media3-ui-compose, recyclerview, window-java, com.airbnb.android:lottie, androidx.compose.material3.adaptive:adaptive, androidx.media3:media3-ui, com.google.accompanist:accompanist-drawablepainter, androidx.paging:paging-compose, androidx.camera:camera-compose, androidx.compose.material:material-icons-extended, com.google.android.gms:play-services-auth, credentials-play-services-auth, androidx.credentials:credentials, android-integration, camera-extensions, documentfile, Glide, androidx.exifinterface:exifinterface, com.github.jknack:handlebars, androidx.camera:camera-video
- Only in thunderbird-android: androidx.activity:activity, androidx.navigationevent:navigationevent, datastore-preferences, androidx.datastore:datastore, activity-compose, koin-bom, koin-compose, koin-compose-viewmodel, koin-core, koin-core-viewmodel, lifecycle-runtime-ktx, lifecycle-viewmodel, lifecycle-viewmodel-compose, navigation-compose, org.jetbrains.compose.runtime:runtime, androidx.core:core, adaptive, core-splashscreen, fragment-compose, glance-material3, graphics-path, material3, org.jetbrains.compose.components:components-resources, androidx.fragment:fragment, androidx.recyclerview:recyclerview, androidx.coordinatorlayout:coordinatorlayout, Glance, de.hdodenhof:circleimageview, androidx.glance:glance-preview, androidx.swiperefreshlayout:swiperefreshlayout, material-icons-extended, net.openid:appauth, com.github.bumptech.glide:glide, jdom2, jinja2, org.apache.james:apache-mime4j-dom, org.jsoup:jsoup, com.fleeksoft.ksoup:ksoup, json-schema-validator, jsonschema, io.ktor:ktor-client-logging, logback-classic, timber

## Side by side

| | Signal-Android | thunderbird-android |
|---|---|---|
| Size | 951,618 lines written, 5,633 code files | 351,476 lines written, 2,919 code files |
| Who writes it | 0% of its commits signed by AI | 0% of its commits signed by AI |
| Activity | Last push November 6, 2026, 21,173 commits, 29,597 stars | Last push November 6, 2026, 17,173 commits, 14,195 stars |
| Tests | 1,054 test files. 32.5% of its code files have a test that imports them | 808 test files. 44.2% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, Signal-Android or thunderbird-android?

Signal-Android, with 951,618 lines written; thunderbird-android has 351,476.

The proof: [signalapp/Signal-Android's code at commit a74583b](https://github.com/signalapp/Signal-Android/tree/a74583b01e260944f699c4da03ba4e8ce04de32b)

### Which has more GitHub stars, Signal-Android or thunderbird-android?

Signal-Android, with 29,597 stars; thunderbird-android has 14,195.

The proof: [signalapp/Signal-Android on GitHub](https://github.com/signalapp/Signal-Android)

### Which has more tests, Signal-Android or thunderbird-android?

Signal-Android, with 1,054 test files; thunderbird-android has 808.

The proof: [signalapp/Signal-Android's code at commit a74583b](https://github.com/signalapp/Signal-Android/tree/a74583b01e260944f699c4da03ba4e8ce04de32b)

### Which was updated more recently, Signal-Android or thunderbird-android?

Both got their last push on November 6, 2026.

The proof: [thunderbird/thunderbird-android's commits on GitHub](https://github.com/thunderbird/thunderbird-android/commits)

## Sources

- signalapp/Signal-Android: Read on November 8, 2026, at commit a74583b (https://github.com/signalapp/Signal-Android/tree/a74583b01e260944f699c4da03ba4e8ce04de32b)
- thunderbird/thunderbird-android: Read on November 9, 2026, at commit 467787f (https://github.com/thunderbird/thunderbird-android/tree/467787fcc43e560aae2d670c7cfa5f9036ca486d)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.
