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Next step is KotlinConf 2026, Munich 👀

Dokka in Material for MkDocs Embed your Kotlin documentation comments into a Material for MkDocs site

Dokka for MkDocs 0.6.2 is out, with support for Dokka 2.2.0!

dokka-mkdocs.opensavvy.dev

Dokka in Material for MkDocs Embed your Kotlin documentation comments into a Material for MkDocs site

Built with dokka-mkdocs.opensavvy.dev/index.html

Now *this* is the developer experience we envision

Have you?

Support us by voting for @ivcanet.bsky.social in the 'Online presence' category!

You can explore the before/after yourself in the KtMongo repository;

Previous version: ktmongo.opensavvy.dev

New version: opensavvy.gitlab.io/-/automation...

Dokka in Material for MkDocs Embed your Kotlin documentation comments into a Material for MkDocs site

There is more to see, so take a look at the project!

dokka-mkdocs.opensavvy.dev

This version also greatly reduces the size of the generated documentation, by compacting information together.

2612 → 909 pages
1 GiB → 198 MiB

Before / after

Before / after

Here are a few examples in the KtMongo repo

Before / after

0.6.0 • Beta graduation, improved paths & improved UX - Dokka in Material for MkDocs Embed your Kotlin documentation comments into a Material for MkDocs site

Dokka for MkDocs 0.6.0 is out, with big changes!

We now have a proper aggregator module, which fixes all the big issues.

The project thus graduates to beta!

dokka-mkdocs.opensavvy.dev/news/2026/03...

Arrow Resources - OpenSavvy Prepared Magicless testing framework for Kotlin Multiplatform, featuring time management, parameterization and isolated fixtures.

Prepared 2.5.0 is out with helpers for Arrow Resources!

prepared.opensavvy.dev/features/com...

Date and time - OpenSavvy Prepared Magicless testing framework for Kotlin Multiplatform, featuring time management, parameterization and isolated fixtures.

Prepared 2.4.1 brings stable time control with Kotlin 2.3.0!

prepared.opensavvy.dev/features/tim...

Note that without KtMongo, the official libraries bson-kotlin and bson-kotlinx serialize Instant and Uuid differently!

ObjectId - OpenSavvy KtMongo The next MongoDB driver for Kotlin

KtMongo's ObjectId and other BSON types can be serialized identically using:
• The official library bson-kotlin
• The official library bson-kotlinx
• Our Multiplatform library bson-multiplatform

ktmongo.opensavvy.dev/api/-kotlin%...

Screenshot of https://dokka-mkdocs.opensavvy.dev/api/-library%20module/opensavvy.dokka.material.mkdocs.example/foo2.html

Dokka for Material MkDocs 0.5.4 is out!

• Kotlin 2.3.0
• Gradle 9.2.1
• Dokka 2.1.0
• Native breadcrumb support

dokka-mkdocs.opensavvy.dev

Query parameters - OpenSavvy Spine Share your Ktor endpoints between client and server

Spine 0.9.2 brings fixes for explicit null query parameters

Thanks again @skye.codes!

spine.opensavvy.dev/parameters.h...

0.8.2 • Kotlin 2.3.0 and documentation website improvements - Vite for Kotlin Use ViteJS in your Gradle and Kotlin projects

@vite.dev for @kotlinlang.org 0.8.2 now supports Kotlin 2.3.0!

We've also made a few improvements to the UX of the website.

vite-kotlin.opensavvy.dev/news/2026/02...

Prepared 2.4.0 is out:

• Conditionally ignore tests
• Better exception handling of fixtures
• Bug fixes

prepared.opensavvy.dev/news/2026/02...

OpenSavvy ❤️ Arrow

Spine is really cool! If you’re looking for a great way of doing typesafe routing in Ktor check it out!

Now also with Arrow-kt support 😍

OpenSavvy Spine Share your Ktor endpoints between client and server

Learn more: spine.opensavvy.dev

routeWithRaise(User.get) { val id = idOf(User) val user = dataLock.withLock("get $id") { data.find { it.id == id } } ensureNotNull(user) { NotFound(id) } respond(user) }

Spine 0.9.1 comes with bug fixes for #Arrow compatibility for typed #Ktor endpoints:

Thanks @skye.codes for the contribution!

✗ a: ✓ 0: 1 ✓ 1: 2 ✗ 2: (field not present) "Bob" check(a == b) { (a diff b) ?: "no diff" } | | | | | {"a": [1, 2, "Bob"]} | false {"a": [1, 2]}

With KtMongo 0.26.0, easily compare two complex BSON documents or arrays

Particularly useful in tests to understand what changed!

ktmongo.opensavvy.dev

test("Multiple indices") { check(multiDoc().select<String>("$.a[0, 3][0:1:2]").toList() == listOf("a", "d")) }

With KtMongo 0.26.0, use complex JSONPath expressions to find data in your BSON documents!

ktmongo.opensavvy.dev

We can't view our own profile anymore though

Our domain name is now verified again!

opensavvy.bsky.social/ktmongo The next MongoDB driver for Kotlin

We're now on @tangled.org!

tangled.org/opensavvy.bs...

Pedestal 3.2.0 adds:

• 32-bit optimized EnumSet
• Multiplatform weak references
• Multiplatform weak value maps

pedestal.opensavvy.dev/api-docs/