The market for WPS software is dominated by three names that have been around for 15+ years:
- WeldAssistant (from Mahler)
- WeldOffice (from C-spec)
- WPS Maker 2 (from various distributors)
All three are functional. All three meet code. All three have an installed base in fab shops across North America and Europe. They are also all desktop-installed, single-user (or single-machine) tools with infrequent UX updates and slow tracking of new code editions.
Here is how a modern cloud-based WPS tool compares on the dimensions that matter.
Installation and deployment
Desktop incumbents: Install on Windows PCs. License keyed to the machine or to a USB dongle. Multi-user requires extra licensing or a Citrix-style remote desktop setup.
Modern cloud: Sign-in from any browser. No install. Organizations get a shared library; users get individual accounts with role-based access. Floor terminals access the same library as the QC office.
Code edition tracking
Desktop incumbents: Updates ship as a major version release. Edition migrations (2020 → 2025) typically arrive 6-18 months after the new edition is published. Customers wait.
Modern cloud: Code tables and rule engines are updated server-side. When AWS publishes the 2025 edition, the cloud tool can ship updated rules within weeks. No installation, no client-side update.
Multi-user collaboration
Desktop incumbents: A WPS file lives on one user's machine. Sharing means emailing files or saving to a network drive. Two users editing the same file produces a merge conflict.
Modern cloud: Multiple users on the same WPS in real time, or sequentially with revision history. Comments, change-tracking, and approval workflows are first-class.
Rule engine
Desktop incumbents: Each tool has its own implementation of the AWS tables. Some are more complete than others. Updates are tied to release cycles.
Modern cloud: Encoded as data, not as code. Rule changes ship without redeploying the application. AI-assisted drafting layers on top of the rule engine.
AI narrative drafting
Desktop incumbents: None of the three have meaningful AI integration. They're forms with database backends.
Modern cloud: Native AI generates the narrative blocks (process description, joint preparation, technique notes) while the rule engine handles code-table values. Drafting time drops from ~90 minutes to ~10 minutes per WPS.
PDF output quality
Desktop incumbents: Annex M-style PDFs with embedded joint sketches. Quality is good; templates are conservative.
Modern cloud: Modern typography, embedded JSON-LD for searchability, optional watermarking for draft vs approved status. Comparable quality with better digital integration.
Audit packet export
Desktop incumbents: Manual export of each WPS to PDF, then bundle. Takes hours for a 30-WPS library.
Modern cloud: One-click audit packet — current revisions of all WPSs, supporting PQRs, lab reports, WPQ register. Minutes instead of hours.
Where the desktop incumbents still hold ground
Not everything goes the cloud's way:
- Air-gapped facilities. Nuclear and some defense contractors need fully offline operation. Desktop tools handle this; cloud tools don't.
- Decade-old WPS libraries are stored in the desktop tool's native format. Migration is real effort.
- Familiar workflow. Existing CWIs have years of muscle memory. Retraining costs are real.
- Specialty modules. Some desktop tools have niche features for unusual codes (aerospace AWS D17, marine ABS) that newer tools haven't built yet.
Practical recommendation
For a shop starting a new WPS library, modern cloud-based tools deliver substantially better UX, faster code-edition tracking, and meaningful AI assistance for a fraction of the per-seat cost.
For a shop with a deep existing library on a desktop tool, the migration calculus is real. A phased approach — new WPSs in the cloud tool, legacy WPSs frozen until they expire — works well and lets the shop benefit from AI on new procedures while preserving the existing library.
The audit doesn't care which tool produced the WPS. It cares whether the WPS is compliant. Both desktop incumbents and modern cloud tools produce compliant WPSs when used correctly. The question is which one your team will actually use, every day, without complaining.