1
Extra Product Options for WooCommerce (ThemeHigh) Included
Readme FAQ says the plugin is compatible with WPML.
100feature score
WordPress WooCommerce Product Add-ons & Options Plugins with Multilingual support
Works with WPML, Polylang or similar. 9 of the 9 plugins we track include it.
2
Product Addons for WooCommerce (Acowebs) Included
WPML support (2.2.0) and Polylang support (2.2.3) in the changelog.
97feature score
3
WooCommerce Product Options by Barn2 Included
Full WPML integration since 2.0.0; also tested with TranslatePress and Weglot.
100feature score
4
Advanced Product Fields for WooCommerce Partial
Basic WPML/Polylang support in free changelog; full multilingual support is a premium feature.
91feature score
5
Extra Product Options & Add-Ons for WooCommerce (ThemeComplete) Included
Official WPML-certified plugin; qTranslate X also supported.
95feature score
6
PPOM – Product Addons & Custom Fields for WooCommerce Included
Free plugin is ready for WPML and Polylang.
95feature score
7
Flexible Product Fields Included
Works with WPML, Polylang and Loco Translate; WPML guide in docs.
87feature score
8
YITH WooCommerce Product Add-ons & Extra Options Included
WPML compatible with a dedicated WPML localization guide.
95feature score
9
Woo Product Add-Ons Included
WPML lists the extension as compatible, translating labels via WooCommerce Multilingual.
80feature score