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Top IT Service Providers for Custom Software Development

953 IT service providers ranked by rating, review volume and listing quality.

TrustList ranks more than 950 IT service providers offering custom software development, ordered on client reviews and profile quality, never on payment. At the top right now: Savas Labs, Celebrate Drupal and Azoft.

The largest markets we rank for custom software development: USA (306).

What to check before you shortlist

A discovery or specification phase before a fixed estimate
Who is on the team, and whether they stay for the whole project
That you own the intellectual property and the source code
Testing, documentation and maintenance after release

For vendors

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The order is earned: ratings, verified reviews and listing quality decide it, and nobody can pay to move up. There are two ways to stand out, and each one says what it is.

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Marked Sponsored, and it never changes the order
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How is this ranking worked out?

Each firm's position comes from its client reviews and its profile, blended into one score:

Rating, smoothed so a single five-star review cannot outrank a firm with hundreds of good ones
Review volume, with diminishing returns
Profile completeness: the details a buyer needs to judge the firm
Earned trust: verification and awards, as a small lift

No firm can pay for a position. Sponsored listings are labelled and shown apart from this list. How rankings work

Custom Software Development companies by country

Articles

Related reading

Articles tagged with this category.

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Software Development

13 May 2024 · Aspire Software Comsultancy

Navigating the Selection Process: Tips for Choosing the Right Custom Software Development Firm

Selecting the right Custom Software Development Company is a pivotal decision that can influence your project's success, budget, and…

Saudi Arabia

16 Sept 2026 · TrustList Editorial

Hiring tech talent for Saudi projects: staff augmentation in Saudi Arabia in 2026

Saudi Arabia buys more tech talent than it supplies. For projects in the Kingdom: local firms or offshore teams, the working week, Arabic,…

Staff Augmentation

16 Sept 2026 · TrustList Editorial

Hiring developers in Ukraine through a staff augmentation firm: the 2026 guide

An IT sector that has kept exporting through the war: where teams work today, how they keep delivering, and what to check on the register,…

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Top IT Service Providers for Custom Software Development

ProСoders

Agicent App Company

Segue Technologies

95Visual

Portland Webworks

Sigma Software Group

Parthenon Software Group

WIS Software

Logicify

Octobot

Netguru

Ratio Web

Merixstudio

10Clouds

Tivix, Inc.

sunscrapers

SWECKER

Achieve Internet

Agnian

Imaginary Landscape, LLC

Neon Rain Interactive

Divio

The Creative Momentum, LLC

Dice Infocom Private Limited