| What it does | Compare files, folders and archives side by side on Windows
| Free JSON API for construction calculators with test vectors and building codes
|
|---|
| Stage | Established
| Not given
|
|---|
| Founded | 1995
| Not given
|
|---|
| Based in | AT
| Not given
|
|---|
| Pricing model | Free trial
| Open source
|
|---|
| Pricing | from $35 one-time, per user. Free 30-day full-featured evaluation. Volume tiers available for teams. Free 2.x upgrade for WDiff32 licensees.
| Free under CC BY 4.0 licence
|
|---|
| Key features | - Side-by-side text comparison with in-place editing
- Archive support for ZIP, 7-Zip, RAR, tar, CAB and ISO formats
- Rename detection for files and archives
- Recursive directory comparison with ignore rules
- Binary byte-by-byte comparison mode
- Folder synchronization with preview
- Export reports as HTML, plain text or JSON
- Integration with git, TortoiseGit, TortoiseSVN, IDEs and file managers
- Persistent hash cache for fast repeat comparisons
- Full Unicode support including UTF-8 and UTF-16
| - 1,173 construction calculators with full inputs and test vectors
- 3,485 published test vectors for validation
- No authentication key or rate limits required
- Citations to building standards with section numbers
- Executable API for running calculations on request
- MCP server integration for AI assistants
- 79 job takeoffs with calculator sequences
- Cross-market glossary in US, Canadian, UK and Australian usage
- Corrections ledger tracking confirmed errors
- Unit conversion with exact statutory factors
|
|---|
| What makes it different | - No cloud, no accounts, no extraction required for archive comparison
- Rename detection identifies moved files instead of showing as delete plus add
- Native Windows application with persistent hash cache for speed
- Works without leaving the diff: edit, merge and save within the same window
- Free full-featured 30-day trial with no functional limits
| - No API key required with no rate limits or quotas
- CC BY 4.0 licence allows commercial use and redistribution
- Every calculation cited to specific building code sections
- Pinned test cases prevent silent changes to published figures
- Complete accessibility with CORS support for browser use
|
|---|
| Free plan | Not given
| Not given
|
|---|
| Open source | Not given
| Not given
|
|---|
| Platforms | Not given
| Not given
|
|---|
| Public API | Not given
| Not given
|
|---|
| Community votes | 0 | 0 |
|---|
| DR (Domain Rating by Ahrefs) | 2 ● no change since last check | Not checked yet |
|---|
| Trust Flow (Majestic) | 8 | 0 |
|---|
| Citation Flow (Majestic) | 9 | 26 |
|---|
| Referring domains (Majestic) | 7 | 29 |
|---|
Diffoniq™
Craft Quantities