back to company universe
Developer tools

Castled.io

Castled.io is a Customer Engagement Platform (CEP) that brings the power of data in the warehouse to the marketer. Essentially, Castled.io is similar in feature set to Braze, CustomerIO or MoEngage with a major difference - We don't store your customer data. Instead Castled sits on top of your cloud data warehouse to create segments and engage them across channels.

sources
1
Evidence entries preserved.
affiliations
1
Y Combinator
competitors
6
Mapped from High Signal graph features.
status
generated
D1 lookup
last updated
2026-07-15
16:41 UTC
source evidence
Why this company exists here

Y Combinator

yc-company-directory #5136

Castled.io is a Customer Engagement Platform (CEP) that brings the power of data in the warehouse to the marketer. Essentially, Castled.io is similar in feature set to Braze, CustomerIO or MoEngage with a major difference - We don't store your customer data. Instead Castled sits on top of your cloud data warehouse to create segments and engage them across channels.

source
generated read
High Signal interpretation

Castled.io is classified as Developer tools from source descriptions and fund-directory context. Similar companies below are ranked from offline product facets and meaningful description overlap; category and source affiliation can only strengthen an existing product match. For lookup-created rows, the profile starts as pending enrichment until deeper source collection runs.

offline extraction
Product facets
BrazemarketerCastled.ioCustomerIOMoEngageCustomer Engagement Platform (CEP)Customer Engagement PlatformcustomerCastled
mapping method
Similarity graph

Local clusters rerank extracted product concepts and description terms. The generated graph remains the fallback for sparse descriptions: offline reciprocal product-similarity graph: extracted concepts + description terms + bounded category/affiliation boosts. Minimum fallback score: 0; max competitors: 6.

discovery cluster

Companies similar to Castled.io

Developer tools · 6 peers

A deterministic local cluster built from offline product facets and meaningful description terms. Category and selected-institution affiliation provide bounded tie-breaks. Open any peer to continue exploring its cluster.

Plivo

match 63

Plivo's platform helps businesses create and deploy Voice AI Agents for various roles like customer support, marketing engagement, lead qualification including channels like WhatsApp, Chat & SMS. Plivo's platform powers billions of transactions each year globally for thousands of businesses worldwide like Uber, Meta, Zomato, Godaddy etc.

shared extracted concept terms: customer, engagement; shared product terms: customer, engagement, create, channel; shared product theme: developer infrastructure, sales and marketing; shared affiliation: Y Combinator

Talkable

match 50

Talkable (formerly Curebit) helps online stores increase revenue through referrals by turning existing customers into marketers. When customers check out from a Talkable-enabled store, they are presented personalized deals that they can gift to their friends by posting to Facebook or forwarding a link. The deals give both the the original customer and their referred friends a rebate on their purchase at this store.

shared extracted concept terms: marketer, customer; shared product terms: customer, marketer, store; shared product theme: sales and marketing; shared affiliation: Y Combinator

HelpSocial

match 49

HelpSocial is the #1 Open API platform for digital customer engagement.

shared extracted concept terms: customer, engagement; shared product terms: customer, engagement; shared product theme: developer infrastructure, sales and marketing; same category: Developer tools

Fixture

match 45

Fixture is an AI-native CRM built for startups. It integrates with all the tools you use to communicate with customers, tracks marketing channels (e.g. website traffic), and pulls everything into a single go-to-market context store. Our AI agents proactively help you move your deals forward, and you can use Fixture from our web UI or any of your favorite AI tools (e.g. Claude Code).

shared extracted concept terms: customer; shared product terms: customer, store, channel; shared product theme: developer infrastructure, sales and marketing; shared affiliation: Y Combinator

Serve First

match 41

Serve First provides customer feedback surveys and staff engagement platforms.

shared extracted concept terms: engagement, customer; shared product terms: customer, engagement; shared product theme: sales and marketing

Case Status

match 34

We help busy attorneys provide clients with a better experience through our cloud based client engagement platform.

shared extracted concept terms: engagement; shared product terms: cloud, engagement; shared product theme: developer infrastructure; same category: Developer tools