
Building Connected
PlanHub
Alberta subcontractor network for commercial construction. GCs post what they need, and relevant available subcontractors are notified and can respond directly.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Website, pricing, platforms and company facts side by side.
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| Website | syndex.ca | diffyn.com |
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| Company | Startup from Canada · 1 - 9 employees · 2026 | — |
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In their own words, as submitted to SaaSHub.


Syndex is a construction subcontractor network built for general contractors and subcontractors in Alberta. General contractors post the trade, location and timing they need. Syndex matches the request with relevant subcontractors and notifies them directly. Available subcontractors can respond...
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What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


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The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
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As answered by people managing Syndex and Diffyn.
Syndex's answer
Syndex focuses on subcontractor availability rather than static directory listings. General contractors post what they need, and matching local subcontractors are notified directly so only interested and available companies respond.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
Syndex's answer
Syndex is built for a simple problem: finding the right subcontractor when the work is actually available. Instead of searching large directories or contacting companies one by one, GCs send one request to relevant local subcontractors.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Diffyn's answer:
React, Next.js, POSTGRESQL
Syndex's answer
Commercial general contractors looking for subcontractors, and local subcontractors looking for new project opportunities. Syndex currently focuses on Alberta, with its initial network centered in Calgary.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
Syndex's answer
Syndex was created in Calgary in 2026 to make subcontractor sourcing simpler. The idea came from a common construction problem: contractor directories can show who exists, but they do not tell a GC who is available and interested in the work right now.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
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