- B2B Pay
- Babyfit
- BackedByCFO
- Badrap
- Bamomas
- Band on the Web
- Bankify
- Basemark
- Batches
- BCaster
- BearIT
- Beat2Phone
- Beatsy
- Beely
- BEEMRAY
- BeiZ / Lola Panda
- Belightful Design
- BelleGames
- belon.gs
- Benji Bananas
- Best Glass
- Beyond Logistic
- Bezala
- Bfix
- Biddl
- BiiSafe
- Bioretec
- Bit By Byte Creations
- bitsofYours Software
- Bitwards
- Bizmind
- Black Block
- Black Eye Lens
- Blinkamovie
- Blok
- Blox Car
- Bob W
- Boksi
- Boldan
- Bone Index Finland
- Bon Games
- Bono Health
- Bonusway
- BonWell Intelligence
- Bookiwoo
- Bookndo
- Book Salon
- BookTheArtists.com
- Born Local
- Botne
- BouncePoint
- Braincare
- BrandBastion
- Breaks Finland
- Brella
- Briefr
- BrightCharger
- Brighterwave
- Brightside
- Brimstone Interactive
- Brinkhall Sparkling
- BroadBit Batteries
- Broomu Digitals
- bttn
- BucketList
- Buddy Healthcare
- Buildie
- Buildlink
- Business Rooster
- BusPay Oy
- Buzzbudz