Best Open Asset Import Library (Assimp) Alternatives in 2026

Updated October 2026

20 platforms from 3D file converter software ranked against Open Asset Import Library (Assimp) on the same published basis.

1
HOOPS Exchange Free trial AndroidiOSLinuxMacWeb 8.1
Open Asset Import Library (Assimp) vs HOOPS Exchange
2
3D-Tool Free plan Win Free7.6
Open Asset Import Library (Assimp) vs 3D-Tool
3
CAD Exchanger Free trial AndroidapiiOSLinuxMac 7.4
Open Asset Import Library (Assimp) vs CAD Exchanger
4
Convert3D Free plan apiLinuxMacWebWin $74.92/mo7.4
Open Asset Import Library (Assimp) vs Convert3D
5
Spin 3D Free plan MacWebWin Free7.4
Open Asset Import Library (Assimp) vs Spin 3D
6
CAD Assistant Free plan AndroidiOSLinuxMacWin Free7.3
Open Asset Import Library (Assimp) vs CAD Assistant
7
ODA File Converter Free plan AndroidLinuxMacWin Free7.3
Open Asset Import Library (Assimp) vs ODA File Converter
8
FBX-glTF-conv Free plan LinuxMacWin Free7.2
Open Asset Import Library (Assimp) vs FBX-glTF-conv
9
FBX2glTF Free plan LinuxMacWin Free7.2
Open Asset Import Library (Assimp) vs FBX2glTF
10
Cadster 3D Converter Core Free plan apiWeb Free7.1
Open Asset Import Library (Assimp) vs Cadster 3D Converter Core
12
Simpel3D Free plan Web $5.75/mo7.1
Open Asset Import Library (Assimp) vs Simpel3D
13
Vertessia Free plan apiWeb $19/mo7.1
Open Asset Import Library (Assimp) vs Vertessia
14
3D InterOp Free trial apiLinuxMacself-hostedWin 7.0
Open Asset Import Library (Assimp) vs 3D InterOp
15
3D Model Converter Free plan Web $9.90/mo7.0
Open Asset Import Library (Assimp) vs 3D Model Converter
16
3D CAD Converter Free trial Win $3.25/mo6.9
Open Asset Import Library (Assimp) vs 3D CAD Converter
17
meshio Free plan LinuxMacWin Free6.9
Open Asset Import Library (Assimp) vs meshio
18
PolyTrans Free trial MacWin 6.9
Open Asset Import Library (Assimp) vs PolyTrans
19
Online 3D Converter Free plan AndroidiOSWeb Free6.8
Open Asset Import Library (Assimp) vs Online 3D Converter
20
Convertpoly Free plan Web Free6.7
Open Asset Import Library (Assimp) vs Convertpoly
21
MeshFormat Free plan Web Free6.7
Open Asset Import Library (Assimp) vs MeshFormat

Open Asset Import Library (Assimp) alternatives compared

#	Platform	Score	Free plan	From	Runs on
1	HOOPS Exchange	8.1			Android, iOS, Linux, Mac, Web, Windows
2	3D-Tool	7.6	Free plan	Free	Windows
3	CAD Exchanger	7.4			Android, API, iOS, Linux, Mac, Web, Windows
4	Convert3D	7.4	Free plan	$74.92/mo	API, Linux, Mac, Web, Windows
5	Spin 3D	7.4	Free plan	Free	Mac, Web, Windows
6	CAD Assistant	7.3	Free plan	Free	Android, iOS, Linux, Mac, Windows
7	ODA File Converter	7.3	Free plan	Free	Android, Linux, Mac, Windows
8	FBX-glTF-conv	7.2	Free plan	Free	Linux, Mac, Windows
9	FBX2glTF	7.2	Free plan	Free	Linux, Mac, Windows
10	Cadster 3D Converter Core	7.1	Free plan	Free	API, Web
12	Simpel3D	7.1	Free plan	$5.75/mo	Web
13	Vertessia	7.1	Free plan	$19/mo	API, Web
14	3D InterOp	7.0			API, Linux, Mac, self-hosted, Windows
15	3D Model Converter	7.0	Free plan	$9.90/mo	Web
16	3D CAD Converter	6.9		$3.25/mo	Windows
17	meshio	6.9	Free plan	Free	Linux, Mac, Windows
18	PolyTrans	6.9	No		Mac, Windows
19	Online 3D Converter	6.8	Free plan	Free	Android, iOS, Web
20	Convertpoly	6.7	Free plan	Free	Web
21	MeshFormat	6.7	Free plan	Free	Web

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Questions about Open Asset Import Library (Assimp) alternatives

What is the best alternative to Open Asset Import Library (Assimp)?

HOOPS Exchange, number 1 in 3D file converter software with a score of 8.1 out of 10. The others here: 3D-Tool, CAD Exchanger, Convert3D and 16 more.

What is the best free alternative to Open Asset Import Library (Assimp)?

3D-Tool is the best-ranked alternative with a free plan. 15 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked on how quickly a newcomer can get going: documentation depth, a free tier or trial, and the platforms it runs on.