Sites and apps similar to OpenInviter include Tapix. It's paid, but Contacts Import is free. Other options are Identity Cloud, CloudSponge, Super Tell A Friend PRO and SocialInviter. In total there are six sites and apps like OpenInviter for self-hosting, Android, iPhone, Mac and Windows.
Tapix is a drop-in CSV and Excel (.xlsx) import package for Laravel applications. It provides a 4-step wizard (Upload, Map, Review, Import) that handles column mapping, inline validation, relationship linking (BelongsTo, MorphToMany), and background queue processing with chunked...
Import your CSV contacts from your favourite desktop client without any cloud syncing. Multi-language fully supported including all common localised codepages (from US & Westen Europe to Eastern Europe to China and Japan) and also UTF, so you get your contact information...
Identity Cloud is a full end-to-end identity as a service (IDaaS) CIAM solution that enables companies to implement enterprise-grade identity management in a fast, flexible way. Engineered with a cloud-native architecture, the solution intelligently scales with application...
The CloudSponge Contact Picker imports all the major address books. Websites use our product so that users don’t have to type email addresses into their word-of-mouth sharing feature to send an invitation, greeting card, or coupon.
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Super Tell A Friend is a powerful script that lets you implement word of mouth marketing campaigns directly on your website.
Social inviter enables your user to import contacts, import friends, send message to friends, fetches user profile and post content to social networks in clicks.
