B45 Labs · Library is a content and family powerhouse that lives inside Autodesk Revit — browse and load anything from a single family to a whole sheet, manage families in bulk, and keep a shared detail library in sync across every project.
Part of the B45 Labs suite. Library installs and updates independently. Installed on its own, it runs standalone with its own ribbon tab; installed alongside Coordination or Production, it integrates as a panel on that product's tab.
A dockable pane to browse, preview, and load content into your model — from two sources (your open models and your external libraries), each with the same rich set of tabs:
- Families — browse loadable families, search and filter by category, preview thumbnails, and insert one or many with chained placement. External
.rfa/.rtelibraries are scanned from folders you configure and opened in the background. - System types — Walls, Floors, Ceilings, Roofs, Pipes, Ducts and more, with a Smart Insert that applies the type to your selection or launches Revit's native draw tool.
- Materials — browse by class (Concrete, Wood, Glass, Metal…) and import across documents, with automatic rename-on-collision and a texture-path fallback.
- Patterns — drafting and model fill patterns, imported with auto-rename.
- Drafting Views, Legends, Sheets, and Groups — cross-document insert of drafting views, legends, whole sheets, and model/detail groups with interactive placement.
- Across every tab — global search with per-section counts, universal Favorites and Recents, list or grid layout, four thumbnail sizes, a persistent on-disk thumbnail cache, and multi-select + batch insert.
A modeless tool to manage families in bulk, across four tabs (filter, search, and multi-select everywhere):
- Unlock Family Parameters — find every locked family parameter (with the reason it's locked), batch-unlock the ones you choose, and reload the families. Pick a family straight from the canvas; per-session undo/redo.
- Rename — an accumulating staging buffer: layer Find/Replace (regex), prefix/suffix, and casing rules, with per-row validation and conflict blocking before you Apply.
- Parameters — batch-add shared parameters, remove parameters by name, and queue several operations before applying them in one pass.
- Export — export selected families to
.rfa, flat or organized into per-category folders.
Publish, standardize, and reuse your details across every project:
- Publish drafting views and legends to a master library, with version control and content-change detection.
- Check and Sync — audit your project's details against the master and pull the latest, with a clear state for each (Up to date, Outdated, Locally modified, Unversioned, Orphan). Promote a corrected detail back up as a new version.
- Details are tracked by a stable GUID + content hash, not by name — so a rename never breaks the link and drift is caught automatically.
| Requirement | Details |
|---|---|
| Autodesk Revit | 2023, 2024, 2025, 2026, 2027 (full support) |
| Operating System | Windows 10 / Windows 11 |
| .NET | net48 (R23/R24) · net8.0-windows (R25/R26) · net10.0-windows (R27) |
| Installation | Per-user — no administrator rights required |
- Download the latest installer from Releases.
- Close Revit before installing.
- Run the installer, accept the license, and select the Revit versions to install for.
- Launch Revit — the Library tools appear on the ribbon.
English, plus Português (BR), Español, Français, and Русский as BETA — AI-assisted drafts pending native review. If a translation reads wrong, tell us at support@b45labs.com.
B45 Labs · Library checks for newer versions and prompts you when an update is available. Routine updates show a gentle toast; only updates required for compatibility or stability block execution until updated.
To improve stability and prioritize development, B45 Labs collects limited, consent-based usage signals — opt-out at any time from the in-app My Profile window:
- Commands executed and usage counts
- Error logs (file paths, model names, and emails redacted before transmission)
- Add-in and Revit version, interface language
- Approximate region (country/region, derived from IP — IP is not stored)
- Anonymous installation and session identifiers
B45 Labs does not collect your Revit or Windows username, device/hardware specs, operating-system details, or any project file contents. Your optional user profile is stored encrypted on your computer and synced only if you opt in. See PRIVACY.md for full details.
| Document | Description |
|---|---|
| TERMS.md | Terms of Use / EULA |
| PRIVACY.md | Privacy Policy |
| CHANGELOG.md | Version history |
| THIRD_PARTY_NOTICES.md | Open-source licenses |
| SUPPORT.md | Support information |
| SECURITY.md | Security policy |
Email: support@b45labs.com
When reporting issues, include: B45 Labs · Library version, Revit version and build number, steps to reproduce, timestamp and screenshot (redact sensitive details).
Copyright (c) 2026 B45 Labs. All rights reserved. Use of this Software is governed by TERMS.md.