Aviationstack is a scalable REST API for real-time flight tracking, historical flight data, airport info, and global aviation data.
from $49.99/mo
About Zeplo
What is Zeplo?
Zeplo is a lightweight HTTP request queue that lets developers add retry, delay, scheduling, and cron to any API call by simply prefixing the URL with zeplo.to/. It eliminates the need for Redis, RabbitMQ, or SQS, handling job state, queues, and workers for you.
Who needs Zeplo?
Zeplo is built for developers building serverless functions, microservices, or any HTTPS API that needs reliable asynchronous processing. It's ideal for teams that want to decouple services without managing message queue infrastructure. It is not for non-technical users or those needing a full-fledged event streaming platform.
Real use cases
Zeplo solves common problems: retry failed payment requests up to 3 times, send a welcome email 50 minutes after signup, schedule a daily Slack standup reminder, or delete user data 30 days after account closure. Every job is traceable in the console, with alerts on failure and the ability to edit and retry failed requests in the UI.
Key features
- Delay & Schedule — Run requests after a delay, on a time, or with CRON/RRULE.
- Auto Retry — Configure retry count and backoff for failed requests (HTTP status >=400).
- Tracing — Each job is fully logged with headers and body for debugging.
- Rate Limit Handling — Automatically respects rate limit headers and retries after backoff.
- Manual Retry — Fix and re-process failed jobs directly in the Zeplo console.
- Webhooks & Alerts — Get notified by email or webhook with customizable alert filters.
- Just Add a Prefix — No SDK or complex setup: prefix any HTTP endpoint with zeplo.to/.
SaaSpartout Score
7.3
/10
Editorial score from our review methodology — not user ratings.
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Zeplo Pricing
Zeplo pricing: from $20 per 100k requests.
For comparison: the median starting price in Developer Tools is $19.99/month, measured across 301 tools we track. See the full SaaS Pricing Index →
Developer Free
Free — includes 500 requests/month, 1 developer, 30-day log retention. Great for development and testing.
Company $39/month
Includes 1 million requests/month plus $10 per million additional, 3 team members, 30-day log retention, priority email support.
Enterprise Custom
Custom pricing for high-volume use cases: volume discounts, custom team size, custom support and SLA. Contact sales.
Start with the free Developer plan — no credit card required. Additional users cost $15/user/month. You can cap monthly spending.
Frequently asked questions
Is Zeplo free?
Yes, Zeplo offers a free Developer plan with 500 requests per month, forever. No credit card required.
How much does Zeplo cost?
Zeplo pricing starts at $20 per 100k requests (pay-as-you-go). The Company plan is $39/month and includes 1M requests plus 3 users. Enterprise is custom.
What is Zeplo used for?
Zeplo is used to queue, retry, delay, and schedule HTTP requests without managing Redis, RabbitMQ, or SQS. Common uses include retrying failed API calls, delayed email sending, cron jobs, and reliable webhook processing.
Who is Zeplo best for?
Zeplo is best for developers building serverless functions or microservices who want to add reliability and scheduling to HTTP requests without infrastructure overhead.
What are alternatives to Zeplo?
Alternatives include AWS SQS, RabbitMQ, Redis, Celery, and Inngest. Zeplo differentiates with a zero-infrastructure, URL-prefix approach.
Does Zeplo support cron?
Yes, Zeplo supports CRON scheduling by adding _cron=*|*|*|*|* to the URL. It also supports time and RRULE-based schedules.
