March 2026 monthly summary focusing on key accomplishments, business value, and technical outcomes across two repos (rerun and egui).

February 2026 monthly summary for rerun-io/rerun. This period delivered key data-visualization improvements and code-quality enhancements that boost stability, maintainability, and business value. Highlights include MCAP support and view customization enhancements for flexible data visualization across message types, alongside targeted improvements to visualizer error reporting and code hygiene.

January 2026 (2026-01) – Monthly summary for rerun-io/rerun focusing on delivering business value through robust visualization, cross‑platform rendering improvements, and safer, maintainable code. Key features delivered, major bugs fixed, and technology/storyline below. Key features delivered: - Enable Vulkan backend for Mac Viewer builds (commit fdbe7d3ba6aa87e5cc1efe688516219a3fd5613e) – cross‑platform rendering support with Vulkan/MoltenVK, improving performance and consistency on Mac. - Use SwiftShader software rasterizer on MacOS CI (commit 003cac526b696642e60da144955b9f18cce71ac9) – CI reliability and visual verification without Metal hardware dependencies. - Visualizer objects support in blueprint override APIs (commits 4f273af5438ca03e745af32e8bce49f4509521f7 and 4ee8bf4be5fe08e8c17f9857c6b4f482ecf26012b) – richer customization pathways for visualizations in both UI and Rust blueprint APIs. - Single method for creating a tree (commit 6c15f5f8deed2622c18ef1cc7e225d7b8db619bb) – unified build flow for DataResult trees, enabling safer parallelization and easier maintenance. - Incorporate native type check (commit 6a94bdb0ce80b8e026e7459ca436360627984ec4) – stronger validation, earlier error detection. - Component mapping improvements (commits 8b68ffefa4791cb0b9f5e9d435ccd73b29e57551 and 62a4ab1baa7e2e7a906feb286cea80da86f631f1) – enhanced experimental mappings and dataflow robustness for plots. - More robust world grid rendering (commit 8c5e24292cab5cd3dfc23ef31f89e758fa5ff16a) – shader-based geometry independence improving precision across rasterizers. - CLAUDE.md documentation draft (commit 2d797cc1b84a58856d71d0d6e0b688f875cdb01b) – early documentation draft to accelerate external visibility. - Simplify queries with store/default/overrides (commit b0c1fa0c684f6ca99063649ecec2fa4f36628a1d) – clearer default/override/store handling for queries. - IPv4 listening on Windows fix (commit d0dda4a5f95a0065f174964d02861431de8d51ac) – improved Windows connectivity out of the box. Major bugs fixed: - Fix HashMap heap_size_bytes computation (commit c72deec6dd68861641c9323ea7df7952425d0857). - Fix constructor argument handling for pinhole camera (commit f26e36b3346218ad82d2e8674636f615647bc037). - Fix transform handling for cameras and depth images in 3D views (commit 390b71de9e23e02e86fc39d08bbce7389d9f994e). - Fix script utility advertising --serve flag (commit cef8edfd702c0d7dd7f371bad1edefc34ae1030a). - Fix incorrect API call in Python snippet (commit 643473db9747cc2ec7cee07f8ad32f1d2ebc8f1e). - Fix logging empty overrides (commit a68b7c24ac063d788b014ea1a0f678f399dd1502). - Don’t show error for implicit transform axes when named transforms are shown (commit f319c52eb77d97005ada472311c2bbf5ffc5613c). - Fix transforms & videos breaking when receiving new data in the background (commit e4ea965191ce90b722457658f938bd5f194c1c17). - Fix lint.py for running on Windows (commit 40a9ec976695f1b9ba03f5e687992cd5985595a6). - Fix Windows IPv4 listening behavior (commit d0dda4a5f95a0065f174964d02861431de8d51ac). - Fix TransformAxes not picking up transform frame from Pinhole configured with named transforms (commit ed310459ae299f6d30ddd33a8bbe35c8e661d9da). - Fix broken visualize remove button (commit 42373f44742f783242623cdbbb0e06b6d6bdeb15). - Fix case of unstable camera image plane distance in degenerate scenes (commit 5529b8e3ff300b36ef54701497582955a24e8996). - Warn when logging a transform at root ('/') without a set parent_frame (commit 75354d31cde1c6b0ae20b32bd7d9e384d311bdda). Overall impact and accomplishments: January 2026 delivered a solid set of cross‑platform rendering improvements, safer data handling, and enhanced developer tooling. The Vulkan/MoltenVK integration for MacViewer improves performance and consistency, while SwiftShader CI ensures reliable verification across Mac test runs. The new single-tree creation API and native type checks reduce maintenance burden and runtime errors, enabling faster feature delivery with higher confidence. Visualization scaffolding was strengthened via blueprint override APIs, broader component mappings, and robust world grid rendering, resulting in a better end‑user experience with more accurate 3D visualizations and fewer edge-case failures. CI and Windows tooling improvements further increase developer productivity and platform parity. Technologies/skills demonstrated: - Rust and systems programming with a focus on correctness, safety, and performance. - Cross‑platform rendering: Vulkan/MoltenVK, SwiftShader, and 3D transforms. - Visualization tooling and APIs: blueprint overrides, visualizer objects, and component mappings. - Code quality and reliability: native type checks, improved linting on Windows, and CI improvements. - Documentation and collaboration: CLAUDE.md draft and co-authored commits for complex features.

2025-12: Delivered visualization enhancements, API stability, and documentation improvements for rerun. Implemented pinholes visualization improvements, stabilized frame-based transform APIs, and overhauled the transform manual. Added support for distinct entity paths for static vs temporal transforms and introduced integration tests for coordinate frame overrides and target frame handling. Addressed reliability across the transform pipeline with fixes to transform timing, snippet rendering, and cross-build/test stability, improving overall robustness and developer experience.

November 2025 delivered a robust expansion of the transform pipeline and visualization capabilities, including flexible transform frame hierarchies, improved query semantics, and stronger tooling integration. The work enhanced data lineage accuracy, rendering reliability across GPUs, and developer productivity through clearer debugging visibility and upstream Rust tooling support.

Monthly summary for 2025-10 focused on modularizing the transform system, stabilizing builds, and expanding test coverage to improve performance and reliability at scale. Key features delivered include moving transform processing modules into a viewer-independent re_tf crate, enabling reuse and simpler maintenance (#11409); parallelizing per-view overrides to speed up many-entity and many-view workloads on native platforms (#11439); adopting the Transform frame-id concept with forest migration and faster ingestion (#11543, #11655); and upgrading the graphics stack and build tooling with wgpu 27 and rust-lld on Windows (#11419, #11414). In addition, the release introduced broader test coverage and reliability improvements, including 2D-in-3D/3D-in-2D image comparisons (#11462), a lightweight transform-hierarchy test script (#11437), and regression tests for archetype poses on the transform tree root (#11535). This work improves stability, performance, and developer productivity while keeping documentation and developer tooling up-to-date (re_tf crate docs #11544; protoc note in migrations #11583; dev-deps cleanup #11661).

September 2025 monthly summary for rerun-io/rerun focusing on features delivered, bugs fixed, impact, and technical skills demonstrated. Highlights include SDK-prefixed labels for label checker and changelog generation, min-wheel-test CI integration for cpp-build-snippets, new Open from URL dialog, refactor enabling picking configuration in view builder, and data-store related enhancements; plus numerous UI/UX and stability improvements across 3D rendering, web viewer, and video streaming.

August 2025 monthly summary for rerun-io/rerun: Delivered major features across the viewer experience, data linking, and stability. Key outcomes: 1) Web viewer and link navigation enhancements enabling CLI URL forwarding to the native/web viewer and command-palette access; 2) Video processing and rendering improvements including H.265 support, channel-based reporting for decoders, and robustness fixes for duration handling; 3) Viewer URL/history enhancements and shareable URLs with pass-through URL support, ViewerImportUrl history updates, and universal copy link across native/web; 4) Time range cleanup for clarity and maintainability, plus browser navigation improvements for HTTP/dataplatform links; 5) CI/Rust test infrastructure upgrades for faster, more reliable releases and broader Windows/macOS coverage. These efforts improve data accessibility, collaboration, and cross-platform stability, delivering tangible business value through faster insight and more robust tooling.

July 2025 monthly summary focused on stabilizing video playback, expanding diagnostics for Rust gRPC, and strengthening test ergonomics and automation. Delivered key features including experimental Rust gRPC connection status inspection and a check_connection_status snippet, improved test harness usability, and automated image-based validation with robust threshold utilities. Implemented graphics readback optimizations and a broad set of stability fixes for VideoStream across native and web, plus UX/UI and documentation hygiene to reduce risk and improve developer/deployer confidence.

June 2025 performance summary focused on delivering scalable VideoStreaming capabilities, stabilizing core pipelines, and expanding developer tooling to accelerate streaming features while ensuring reliability across platforms. Key work included establishing the VideoStream API, UI playback improvements, and data interoperability fixes, complemented by CI enhancements that speed iteration and reduce risk. The month also delivered foundational UX and documentation updates to enable broader adoption and easier maintenance.

May 2025 monthly summary: Focused on delivering high-value features, stabilizing the release surface, and strengthening data visualization capabilities. The work improved data exploration reliability, rendering fidelity, and CI/tooling, enabling faster iteration and safer releases.

April 2025 monthly summary for rerun-io/rerun: key features delivered include auto-discovery and server registration in the Rerun viewer, enhanced visualization robustness and default visualization behavior, and internal core refactors plus build improvements. Impact includes improved catalog visibility, more reliable visualizations, and streamlined developer experience across the project.

March 2025 performance summary focused on usability, performance, and architecture across the rerun platform. Delivered targeted UX improvements for data exploration, modernized blueprint overrides, and accelerated rendering for large scenes, enabling faster workflows and more scalable analytics. Established a foundation for cross-language consistency and future data modeling enhancements.

February 2025 focused on stability, release readiness, and developer experience for the Rerun project. Key features delivered include improvements to the build system and CI, Python runtime enhancements, and API/UX refinements, all aimed at reducing maintenance load and accelerating release cycles. Key features delivered: (1) Build system and CI stability enhancements: Rerun CMake now automatically enforces C++17+ and reduces logspam from failed CI tests, shortening feedback loops. (2) Python/runtime enhancements: expose flush on the Python recording stream and deprecate Python's log_components to simplify usage and improve runtime behavior. (3) API/UX refinements: move Visible to the common module and add user-facing enhancements like a context menu action to copy entity paths and a command palette option to reset to the default blueprint. (4) Visuals and testing improvements: support multiple scalars per timestamp in the SeriesLine visualizer, add snapshot tests for time series views, and ensure deterministic rendering in tests. (5) Release readiness and communication: first draft of the 0.22 release notes with a Python notebook example and related testing/documentation updates. Major bugs fixed include stabilization work across blueprint reset, graph view parity, and standalone builds, as well as fixes for time progression, rendering consistency, and non-final release tagging, which together reduce regression risk and improve user confidence in updates.

January 2025 summary: Delivered architectural and performance enhancements across the rerun core platform, strengthened rendering and serialization paths, and expanded testing/CI reliability. These changes improve runtime efficiency, broaden platform compatibility, and enable faster, more reliable feature delivery for customers and developers.

December 2024 (rerun) monthly summary: Delivered a set of stability, standardization, and performance improvements across the codebase with a focus on business value and user experience. Core terminology standardization reduces future confusion and onboarding effort; rendering, UI, and graph subsystems were stabilized to improve reliability for end users and downstream tooling. Major God-from-Runtime improvements include developer ergonomics via new wrappers and more efficient data queries and profiler usage. Maintained momentum on architectural debt by deprecating/removing legacy components, tightening CI reliability, and improving graphics capability handling to enable safer execution on a broader hardware base.

November 2024 – Rerun: Enhanced media playback reliability and setup flexibility by enabling native H.264 playback with a user-installed ffmpeg, plus strengthened error handling and lifecycle safety in the ffmpeg path. Key improvements include decoder stability, YUV passthrough when possible, and clearer guidance for ffmpeg versioning; plus UI data exposure and continued docs/dependency improvements that boost developer productivity and user value.

October 2024 monthly summary for rerun-io/rerun: Deliveries focused on video processing, UI stability, reflection data, and security hygiene. The work enhances both user-facing capabilities and developer tooling, with concrete commits anchoring each change.