GreatWait

GreatWait

Flow XO
EchoRelay GreatWait

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EchoRelay:

About

EchoRelay is a managed runtime for custom API integrations. Describe one integration once: what comes in, the target system, credentials, the retry policy, and how the answer maps back. EchoRelay validates each inbound request, maps it, replies synchronously, passes streams through, fans out to multiple targets, or queues delivery with automatic retry, a dead-letter queue and replay. Every configuration change is versioned. Preview, diff, dry run, schedule, publish and roll back. When a vendor changes their API or rotates a credential, you update the configuration and publish. Deploy nothing. Build and operate each integration through the REST API, an MCP server so an AI agent can do the wiring, or the web panel. Free to start, no card required.
GreatWait:

About

GreatWait schedules one-off and recurring HTTPS callbacks for apps and AI agents. Create and manage schedules through an API, CLI, remote MCP server, or web dashboard. View delivery history, retry failed deliveries, and cancel, pause, or resume schedules. Controlled bulk operations help manage multiple schedules, while forecasts of upcoming deliveries support capacity planning. Pricing is usage-based at $1 per 100,000 delivery attempts, including retries, with a $10 minimum prepaid purchase. New users receive $1 in trial credit valid for 14 days. The service is designed for technical teams that need scheduled delivery to external HTTPS endpoints.
EchoRelay:

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported
GreatWait:

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported
EchoRelay:

Audience

Software teams that maintain their own API integrations: SaaS products, internal platform teams, and engineering groups carrying custom adapters against vendor APIs with no dedicated integration team.
GreatWait:

Audience

Developers, technical teams, and AI-agent builders scheduling webhook callbacks.
EchoRelay:

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported
GreatWait:

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported
EchoRelay:

API

Offers API Not Supported
GreatWait:

API

Offers API Supported
EchoRelay:

Screenshots and Videos

GreatWait:

Screenshots and Videos

EchoRelay:

Pricing

$5
Free Version Supported
Free Trial Not Supported
GreatWait:

Pricing

$1/100,000 attempts
Usage is $1 per 100,000 delivery attempts, including retries. The minimum prepaid purchase is $10. New users receive $1 in trial credit valid for 14 days. Additional projects cost $5 per month.
Free Version Not Supported
Free Trial Supported
EchoRelay:

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software
GreatWait:

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software
EchoRelay:

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported
GreatWait:

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
EchoRelay:

Company Information

EchoRelay
Founded: 2026
Poland
echorelay.dev
GreatWait:

Company Information

Flow XO
Founded: 2014
United States
greatwait.dev
EchoRelay:

Alternatives

GreatWait:

Alternatives

EchoRelay:
GreatWait:
EchoRelay:
GreatWait:
EchoRelay:
FastHook

FastHook

FastHook.io
GreatWait:
EchoRelay:
EchoCredentialing

EchoCredentialing

HealthStream
GreatWait:
EchoRelay:

Categories

API Management Supported
GreatWait:

Categories

Job Scheduler Supported
EchoRelay:

API Management Features

Access Control Supported
Analytics Supported
API Design Not Supported
API Lifecycle Management Not Supported
Dashboard Supported
Developer Portal Supported
Testing Management Supported
Threat Protection Not Supported
Traffic Control Supported
Version Control Supported
EchoRelay:

Integrations

Model Context Protocol (MCP) Supported
GreatWait:

Integrations

Model Context Protocol (MCP) Supported
EchoRelay:
Claim EchoRelay and update features and information
Claim EchoRelay and update features and information
GreatWait:
Claim GreatWait and update features and information
Claim GreatWait and update features and information