How we make this list: we compare pricing pages, product documentation and public user reviews. Ratings come from G2, Capterra or Trustpilot, with the date we checked them.
Key takeaways
- This is a companies list, not software. Every entry is a development firm you hire to build or modernise .NET software.
- ScienceSoft is the regulated industry pick, with guide rates of 50 to 99 dollars per hour on Clutch and deep healthcare and banking work.
- Itransition is the scale pick, with more than 3,000 engineers and guide rates of 25 to 49 dollars per hour.
- Simform and BairesDev suit product companies that want dedicated teams rather than a fixed scope project.
- Every price here is a guide rate from review platforms. All of these firms quote per project, so treat figures as a starting point for negotiation.
Quick comparison
| Tool | Best for | Starting price | Free plan |
|---|
 ScienceSoft | Regulated industries and enterprise .NET | $50 to $99 per hour guide rate | No |
 Itransition | Large enterprise programmes | $25 to $49 per hour guide rate | No |
 Andersen | Dedicated .NET teams in Europe | $50 to $99 per hour guide rate | No |
 Simform | Product engineering for US companies | $25 to $49 per hour guide rate | No |
 Vention | Funded startups and scale ups | $50 to $99 per hour guide rate | No |
 BairesDev | Nearshore teams for US time zones | See website | No |
 ELEKS | Enterprise engineering and product design | $25 to $49 per hour guide rate | No |
 N-iX | Long term engineering partnerships | $50 to $99 per hour guide rate | No |
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The best .NET development companies
#1ScienceSoft
Best for: Regulated industries and enterprise .NET4.7/5 on
G2 (4 reviews, checked Oct 2026)
Visit scnsoft.com
Starting price$50 to $99 per hour guide rate
Free planNo
ScienceSoft is the safe pair of hands on this list. It has built .NET systems for decades, publishes detailed service pages for .NET development, migration and modernisation, and works in the industries where a failed audit costs more than the software. Its published ballparks are honest by agency standards, which helps budgeting.
The trade is weight. Discovery, documentation and change control are built for enterprise clients. A ten person company wanting a quick internal app will find the process slow and the minimums high.
What we like- In business since 1989 with more than 750 specialists, strong record in healthcare, banking and insurance where compliance shapes the build, ISO certified quality and security processes, US headquarters in McKinney, Texas with delivery centres abroad
Watch out for- Minimum project sizes and enterprise process will be heavy for a small internal tool, guide rates sit above the offshore-only firms, ballpark figures on its own pages put a moderate SaaS build well into six figures
Starting price$25 to $49 per hour guide rate
Free planNo
Itransition is the scale option. If a programme needs forty engineers across .NET, data and QA for two years, it can staff that. Its Microsoft partnership depth shows in enterprise work: integrations with Dynamics, SharePoint and Azure services are routine rather than special requests.
Buyers should staff their side properly. Offshore delivery at this scale works when the client provides a real product owner and fast decisions. Without that, the low hourly rate buys slow progress.
What we like- More than 3,000 engineers across many countries, full cycle services from consulting to support, strong Microsoft practice covering Azure, Dynamics 365 and Power Platform alongside .NET, client projects reported from tens of thousands to several million dollars
Watch out for- Guide rates are low because delivery is largely offshore, which needs active management from the buyer, minimum project size around 25,000 dollars on review platforms, a firm this size can feel impersonal on smaller engagements
Starting price$50 to $99 per hour guide rate
Free planNo
Andersen built its name on dedicated teams: you interview engineers, they join your standups, and Andersen handles contracts, payroll and replacement if someone leaves. Its .NET practice serves banks, insurers and healthcare firms that need that model for years at a time.
The model suits companies that have their own tech leadership and need hands. If you have no architects or product management of your own, a full product firm lower down this list is a better shape.
What we like- Large European delivery footprint with strong .NET and Java benches, known for staff augmentation and dedicated teams in finance and healthcare, structured onboarding and replacement guarantees for team members, offices across Europe and the US
Watch out for- Rates sit in the upper band for European delivery, best suited to team engagements rather than tiny fixed price jobs, time zone fit is best for Europe and the US east coast
Starting price$25 to $49 per hour guide rate
Free planNo
Simform positions itself as a product engineering partner: it wants to help design, build and run a product, not just fill seats. For US mid market companies building .NET backed SaaS products, that mix of product thinking and offshore economics is the appeal.
Ask for named references in your exact product category. Simform's portfolio is broad, and the relevant question is whether its team has shipped something shaped like yours.
What we like- US headquartered in Orlando with delivery in India, product engineering mindset rather than pure body leasing, public case studies in SaaS and platform builds, minimum project around 25,000 dollars keeps it reachable for mid size firms
Watch out for- Rate band is wide, so the quote depends heavily on team location and seniority, smaller bench than the enterprise firms, less depth in heavily regulated industries
Starting price$50 to $99 per hour guide rate
Free planNo
Vention sells speed of assembly: a funded company that needs a senior team in weeks, not quarters. Its .NET engineers sit inside product teams that also cover mobile, data and design, which fits a scale up building one connected product.
The price reflects that positioning. Vention is rarely the cheapest bid, and it is aimed at companies where shipping two months earlier is worth more than the rate difference.
What we like- Built around fast team assembly for startups and scale ups, strong New York presence and startup client list, covers .NET alongside the wider product stack, minimum project reported around 50,000 dollars signals senior teams
Watch out for- Premium pricing for the segment, startup pace and culture will not suit slow corporate procurement, less attractive for pure maintenance of legacy .NET Framework estates
Starting priceSee website
Free planNo
BairesDev's pitch is nearshore: engineers in Latin America who work your hours, at rates below US onshore firms. Its .NET bench is large because the company is large, and it can usually present candidates quickly.
Treat it as a matching service with strong logistics, and interview hard. The spread between its best and average placements is the risk, and your own technical screening is the control.
What we like- Latin American delivery aligned with US working hours, very large talent network and fast matching, covers staff augmentation and full project delivery, long track record with US clients including large brands
Watch out for- Does not publish guide rates, so benchmarking takes a sales process, quality depends on the specific engineers matched, which makes the interview step essential, less of a specialist .NET consultancy than a broad talent platform
#7
ELEKS
Best for: Enterprise engineering and product design
Visit eleks.com
Starting price$25 to $49 per hour guide rate
Free planNo
ELEKS is the engineering led firm on this list. Companies hire it when the problem is technically hard: performance, complex integrations, data heavy platforms. Its design practice also makes it a better fit than most for customer facing products.
For a standard line of business .NET application, ELEKS may be more firm than you need. For the system nobody else wants to touch, it earns its place.
What we like- More than thirty years in business with strong engineering culture, combines product design with deep .NET and data engineering, good record with European and US enterprises, research and development mindset suits hard technical problems
Watch out for- Guide rate band hides a wide spread by role and location, enterprise focus means smaller projects compete for attention, delivery centred in Europe, which suits some US buyers less well
Starting price$50 to $99 per hour guide rate
Free planNo
N-iX closes the list as the partnership pick. Its engagements tend to run for years, with teams that grow and shrink around a client's roadmap. That continuity matters in .NET estates, where the same systems need building, modernising and supporting in sequence.
Smaller buyers should confirm they will get a properly staffed team rather than leftovers from larger accounts. Ask who leads the team and how replacement works, in writing.
What we like- Large Eastern European engineering firm with deep Microsoft and cloud practices, known for multi year partnerships rather than one off builds, strong in data engineering and cloud alongside .NET, established presence in the UK, US and Europe
Watch out for- Partnership model suits ongoing work, not a single small project, rates in the upper guide band, onboarding a large partner takes time before delivery speeds up
How we chose
This is a companies list. We picked firms a buyer can hire in October 2026 with a real .NET practice, published service pages, and a review platform presence that reports guide rates, team sizes and client feedback. We favoured a spread of models: full product firms, dedicated team providers and nearshore matching. Guide rates come from review platforms such as Clutch and GoodFirms and are labelled as guide rates; no firm here publishes a fixed price for custom development, and we did not pretend otherwise. We did not hire any of these firms for this guide.
How to hire a .NET development company without wasting a quarter
Write the problem down before you talk to anyone. A one page brief covering the business goal, the users, the integrations and the deadline gets you comparable quotes. Without it, each firm prices a different imagined project and the cheapest bid is usually the one that understood the least.
Ask every firm the same three questions. Who exactly will lead the team, and can you interview them. What does the estimate assume, in hours, by role. What happens when a key engineer leaves mid project. The answers separate delivery firms from sales operations faster than any portfolio.
Start with a paid discovery or a small first release. A two to four week discovery that produces a backlog and a firm estimate is cheap insurance against a six figure misunderstanding. Firms that refuse any small start are telling you something.
Finally, own your code and your cloud. Contracts should state that repositories, documentation and Azure subscriptions are yours from day one. That single clause decides whether changing firms later is a handover or a hostage negotiation.
Frequently asked questions
How much does it cost to hire a .NET development company?
Guide rates on review platforms run from about 25 dollars per hour for offshore delivery to 100 to 149 dollars per hour for US based senior teams, with Eastern Europe and Latin America in between. Total cost depends on hours and team mix. Small projects usually start around 5,000 to 25,000 dollars in minimums, and a moderate custom product commonly reaches six figures.
What is the difference between a development company and staff augmentation?
A development company takes responsibility for delivering a defined product or project. Staff augmentation gives you engineers who work under your management. Andersen and BairesDev lean toward teams and augmentation. ScienceSoft and Simform lean toward taking delivery responsibility, though most firms here offer both.
Should we modernise our .NET Framework applications or rebuild them?
Usually modernise in steps. Moving to current .NET versions keeps the business logic that already works and avoids the risk of a full rewrite. Ask shortlisted firms for their migration approach and references; a firm that only recommends a rebuild is often selling hours.
How do we check a firm's .NET claims?
Interview the engineers who would join your project, not the sales team. Ask for two references with similar systems, and run a small paid discovery before committing to a large build. Review platform ratings help shortlist, but they are no substitute for talking to past clients.
Do these companies sign NDAs and hand over the code?
Reputable firms sign NDAs before detailed discovery and assign intellectual property to the client in the contract. Confirm in writing that source code, documentation and cloud accounts belong to you, and that handover is not tied to final payment disputes.
Sources we checked (0)
Is your product missing or out of date?
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
Shihab Mia · Founder, Rankite
Shihab has 5+ years in B2B and SaaS SEO. He writes Rankite's software buying guides from pricing pages, documentation and public user reviews. More about Shihab.