When investors back a startup or buy another company, they’re putting serious money on the line. It’s not enough to check financial statements alone, what’s under the hood of the tech matters just as much. A promising product can hide sloppy code, security holes, or a team that isn’t ready to scale. Proper tech due diligence helps investors see these problems before they turn into expensive surprises later. For founders, a good check shows they have nothing to hide and makes buyers or investors more comfortable moving forward.
What good tech due diligence covers?
A proper tech check goes deeper than surface-level demos. It usually looks at how clean and well-organized the code is, how easily the product can handle more users, how secure customer data is, and if the company owns all its software or depends too much on outside tools. It also checks if the tech team can keep building and fixing things fast enough. A clear report shows what’s solid, what needs fixing, and what risks could hit the deal.
A quick look at 7 trusted firms starting with Dextralabs:
Finding the right people to do this work is half the battle. Some firms do generic business due diligence but miss the tech details. The firms in this list have earned trust for doing real technical deep dives that help buyers and founders make clear decisions. The list starts with Dextralabs, which is known for turning complex tech checks into clear reports and honest advice that investors can actually use.
Dextralabs
Dextralabs is one of the top Tech DD agencies in the USA. This Tech due diligence agency has made a name for itself by helping investors and founders get a clear view of what works — and what doesn’t — inside a company’s tech stack. Their team doesn’t just skim through files; they dig into the code, check how things are built, and point out areas that could cause trouble later. This gives clients practical advice on what to fix and what’s already strong enough to support growth.
West Monroe
West Monroe has built trust with private equity firms looking for honest answers about software quality and system health. Their tech specialists look at how well a product is built, if it can handle more users without breaking, and whether the engineering team is strong enough to deliver on big promises. They also help spot hidden costs that might come up after a deal.
FTI Consulting
FTI Consulting is well known for tackling complex deals, especially when there’s a lot of legacy software or cybersecurity concerns. Their due diligence covers everything from system performance to how well a company protects sensitive data. They’re often called in when buyers want a clear sense of how much work it will take to modernize aging systems.
Alvarez & Marsal
Alvarez & Marsal is a go-to when companies need not just a tech check but a plan for what happens next. They look at whether the technology fits the company’s goals, whether the team can scale it up, and how much work it will take to merge two tech stacks. They’re a good fit for deals where operations and tech are deeply tied together.
Plante Moran
Plante Moran has carved out a strong spot helping buyers in the software and SaaS world. Their reviews focus on how well the code is written, whether there’s too much technical debt, and whether the cloud setup is secure and cost-effective. Their reports help buyers avoid surprise rebuilds that can eat into profits later.
Crosslake Technologies
Crosslake was founded by engineers who know what to look for inside the code and the team behind it. They’re known for practical reports that spell out how easy (or hard) it will be to scale the product, what security gaps exist, and whether the engineering processes are strong enough to keep up with growth. Many investors trust them for honest, no-nonsense feedback.
CodeExcellence
CodeExcellence keeps its focus tight: they specialize in deep code audits and technical risk checks. Their team looks at whether the codebase is clean, well-documented, and easy to maintain. They also test how the software performs under stress and point out anything that could slow down progress if not fixed. They’re popular with investors and founders who want an affordable, focused look at product quality.
Conclusion
When there’s big money on the line, ignoring the tech side is a gamble few can afford. A proper tech due diligence partner can help catch costly problems before they drain time and resources. These seven firms have earned a place on this list by doing the hard work that helps investors and startups make confident calls about deals that matter.
