Best Open Asset Import Library (Assimp) Alternatives in 2026

Updated October 2026

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

1
HOOPS Exchange Free trial AndroidiOSLinuxMacWeb 7.5
Open Asset Import Library (Assimp) vs HOOPS Exchange
2
CAD Assistant Free plan AndroidiOSLinuxMacWin Free7.3
Open Asset Import Library (Assimp) vs CAD Assistant
3
Convert3D Free plan apiLinuxMacWebWin $74.92/mo7.3
Open Asset Import Library (Assimp) vs Convert3D
5
Spin 3D Free plan MacWebWin Free7.3
Open Asset Import Library (Assimp) vs Spin 3D
6
ODA File Converter Free plan AndroidLinuxMacWin Free7.2
Open Asset Import Library (Assimp) vs ODA File Converter
7
FBX-glTF-conv Free plan LinuxMacWin Free7.1
Open Asset Import Library (Assimp) vs FBX-glTF-conv
8
FBX2glTF Free plan LinuxMacWin Free7.1
Open Asset Import Library (Assimp) vs FBX2glTF
9
meshio Free plan LinuxMacWin Free7.0
Open Asset Import Library (Assimp) vs meshio
10
3D-Tool Free plan Win Free6.9
Open Asset Import Library (Assimp) vs 3D-Tool
11
CAD Exchanger Free trial AndroidapiiOSLinuxMac 6.9
Open Asset Import Library (Assimp) vs CAD Exchanger
12
Cadster 3D Converter Core Free plan apiWeb Free6.9
Open Asset Import Library (Assimp) vs Cadster 3D Converter Core
13
Online 3D Converter Free plan AndroidiOSWeb Free6.9
Open Asset Import Library (Assimp) vs Online 3D Converter
14
Simpel3D Free plan Web $5.75/mo6.9
Open Asset Import Library (Assimp) vs Simpel3D
15
Vertessia Free plan apiWeb $19/mo6.9
Open Asset Import Library (Assimp) vs Vertessia
16
3D Model Converter Free plan Web $9.90/mo6.8
Open Asset Import Library (Assimp) vs 3D Model Converter
17
MeshFormat Free plan Web Free6.8
Open Asset Import Library (Assimp) vs MeshFormat
18
Convertpoly Free plan Web Free6.7
Open Asset Import Library (Assimp) vs Convertpoly
19
3D_Evolution LinuxWebWin 6.5
Open Asset Import Library (Assimp) vs 3D_Evolution
20
CrossCad/Ware LinuxMacWin 6.5
Open Asset Import Library (Assimp) vs CrossCad/Ware
21
NEXUS Model Converter WebWin 6.5
Open Asset Import Library (Assimp) vs NEXUS Model Converter

Open Asset Import Library (Assimp) alternatives compared

#	App	Score	Free plan	From	Runs on
1	HOOPS Exchange	7.5			Android, iOS, Linux, Mac, Web, Windows
2	CAD Assistant	7.3	Free plan	Free	Android, iOS, Linux, Mac, Windows
3	Convert3D	7.3	Free plan	$74.92/mo	API, Linux, Mac, Web, Windows
5	Spin 3D	7.3	Free plan	Free	Mac, Web, Windows
6	ODA File Converter	7.2	Free plan	Free	Android, Linux, Mac, Windows
7	FBX-glTF-conv	7.1	Free plan	Free	Linux, Mac, Windows
8	FBX2glTF	7.1	Free plan	Free	Linux, Mac, Windows
9	meshio	7.0	Free plan	Free	Linux, Mac, Windows
10	3D-Tool	6.9	Free plan	Free	Windows
11	CAD Exchanger	6.9			Android, API, iOS, Linux, Mac, Web, Windows
12	Cadster 3D Converter Core	6.9	Free plan	Free	API, Web
13	Online 3D Converter	6.9	Free plan	Free	Android, iOS, Web
14	Simpel3D	6.9	Free plan	$5.75/mo	Web
15	Vertessia	6.9	Free plan	$19/mo	API, Web
16	3D Model Converter	6.8	Free plan	$9.90/mo	Web
17	MeshFormat	6.8	Free plan	Free	Web
18	Convertpoly	6.7	Free plan	Free	Web
19	3D_Evolution	6.5			Linux, Web, Windows
20	CrossCad/Ware	6.5			Linux, Mac, Windows
21	NEXUS Model Converter	6.5			Web, Windows

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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 7.5 out of 10. The others here: CAD Assistant, Convert3D, Spin 3D and 16 more.

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

CAD Assistant 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 what each maker publishes: documentation depth, a free tier and the platforms it runs on.