Industry code 62 · Telemark
Computer programming, consultancy and related activities in Porsgrunn
There are 157 active companies in computer programming, consultancy and related activities in Porsgrunn. 22 of them were registered in the last 12 months. Together they have 228 registered employees. The largest company is Dnv Imatis AS with 96 employees. The oldest, Data Kompetanse DA, was founded in 1988. 46% are limited companies.
- Active companies
- 157
- New in the last 12 months
- 22
- Registered employees
- 228
- Share of limited companies
- 46 %
The largest companies in computer programming, consultancy and related activities in Porsgrunn
Sorted by number of employees. Figures are from the Register of Legal Entities and the Register of Company Accounts.
| # | Company | Org. no. | Employees | Revenue | Founded |
|---|---|---|---|---|---|
| 1 | Dnv Imatis AS | 963310439 | 96 | NOK 187.6 m | 1991 |
| 2 | Novari IKS | 998283914 | 70 | – | 2012 |
| 3 | Controlpartner AS | 915828248 | 50 | NOK 102.3 m | 2015 |
| 4 | Kelda Kraft AS | 930667587 | 7 | NOK 3.3 m | 2022 |
| 5 | Plan B It AS | 922988625 | 5 | NOK 2.7 m | 2019 |
| 6 | Nikolai Lorentzen Epf | 823986572 | – | – | – |
| 7 | Keiser Wes | 826319682 | – | – | – |
| 8 | Iso Tjenester AS | 828635352 | – | NOK 639.5k | 2022 |
| 9 | Rønning Webutvikling | 830347232 | – | – | – |
| 10 | Thygesen 2.0 | 831718552 | – | – | – |
| 11 | It-Firma AS | 833140892 | – | NOK 50k | 2024 |
| 12 | Ulrik Johnsen Consulting | 836957962 | – | – | – |
| 13 | Contrago AS | 837674972 | – | – | 2026 |
| 14 | Minda AS | 838747752 | – | – | 2026 |
| 15 | Anders Nygaard Consulting | 887951292 | – | – | – |
| 16 | Codus Marketing Lorentzen | 894940522 | – | – | – |
| 17 | Antagonist AS | 913493621 | – | NOK 162.2k | 2014 |
| 18 | Illeris AS | 913859871 | – | NOK 1.5 m | 2014 |
| 19 | Panoply AS | 914126193 | – | NOK 229.3k | 2014 |
| 20 | Microflash Kristian Michael Furuholmen | 915147763 | – | – | – |
| 21 | Nils Roger Nordbach | 915990428 | – | – | – |
| 22 | Rossbach Data | 916087314 | – | – | – |
| 23 | Rossbach Data AS | 917421560 | – | NOK 171.3k | 2016 |
| 24 | Klqd AS | 917555028 | – | – | 2016 |
| 25 | Løndstrupp Design AS | 918570780 | – | NOK 196.9k | 2017 |
Newest companies in computer programming, consultancy and related activities in Porsgrunn
- Minda AS26 Oct 2026
- Hemstad Hobby16 Oct 2026
- Holm & Tall AS20 Aug 2026
- Hov Resono Logic15 Aug 2026
- Fjellbo-Aas Consulting14 Aug 2026
- Discfront Bjaarstad2 Jun 2026
- Contrago AS7 May 2026
- Rolland - Enkel Nettside17 Apr 2026
- Echoheim Heiland8 Apr 2026
- Klein-Holmen Digital16 Mar 2026
Frequently asked questions
How many companies in computer programming, consultancy and related activities are there in Porsgrunn?
The Register of Legal Entities lists 157 active companies in computer programming, consultancy and related activities in Porsgrunn. 22 of them were registered in the last 12 months.
Which is the largest company in computer programming, consultancy and related activities in Porsgrunn?
Dnv Imatis AS is the largest by number of employees, with 96 employees. The organisation number is 963310439.
How many people work in computer programming, consultancy and related activities in Porsgrunn?
The companies have 228 registered employees in total. The figures are based on employee counts in the Register of Legal Entities, and 5 of the 25 largest companies have reported employees.
How long have there been companies in computer programming, consultancy and related activities in Porsgrunn?
The oldest active company, Data Kompetanse DA, was founded in 1988. 46% of the companies are limited companies.
Explore further
Computer programming, consultancy and related activities in nearby municipalities
Sub-industries in Porsgrunn
Source: the Register of Legal Entities and the Register of Company Accounts. The overview shows active companies registered in the municipality with industry code 62. Figures are updated continuously.

