Is etcd or Knack better?

Neither clearly leads. etcd starts at On request and Knack at $59/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, etcd or Knack?

etcd starts at On request and Knack at $59/month.

Does etcd or Knack run on more platforms?

Both run on Web, so platform support will not decide this one for you.

What is etcd best used for?

etcd is most often used for storing kubernetes cluster state, which is what the overwhelming majority of etcd deployments are doing, leader election and distributed locking in a home-grown scheduler or control plane, using leases and transactions, service discovery and dynamic configuration where readers need to be notified of changes rather than poll for them, coordinating failover in a clustered database, as patroni does for postgresql. Of those, storing kubernetes cluster state, which is what the overwhelming majority of etcd deployments are doing and leader election and distributed locking in a home-grown scheduler or control plane, using leases and transactions are not what Knack is typically brought in for.

What can etcd do that Knack cannot?

etcd covers Raft consensus, Linearizable reads, Transactions, Leases. Knack covers Visual database builder, User logins and roles, Page builder, Unlimited users.

Databases · head to head

etcd vs Knack

etcd

Databases

A distributed key-value store using Raft consensus, built for cluster coordination rather than application data.

From: On request
Free plan: No

Visit etcd Full review

Knack

Databases

Hosted no-code database and web app builder priced by stored records and storage, with unlimited user accounts on every plan.

From: $59/month
Free plan: No

Visit Knack Full review

The short version

Knack starts at $59/mo; etcd prices on request.
Only etcd lists raft consensus; only Knack lists visual database builder.
Prices and features on this page were last checked on 13 November 2026.

Where they differ

Only the attributes on which etcd and Knack actually diverge.

Attributes where etcd and Knack differ
Attribute	etcd	Knack
Starting price	On request	$59/month
Pricing model	Open-source	Subscription

Identical on both: free tier (No), platforms (Web), category (Databases).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in etcd

Raft consensus
Linearizable reads
Transactions
Leases
Watches
MVCC revision history
Role-based access control
Snapshot backup and restore

Only in Knack

Visual database builder
User logins and roles
Page builder
Unlimited users
E-commerce
Automation flows
Scheduled tasks
REST API and webhooks

What people use each for

The jobs each tool is most often brought in to do.

etcd

Storing Kubernetes cluster state, which is what the overwhelming majority of etcd deployments are doingnot Knack
Leader election and distributed locking in a home-grown scheduler or control plane, using leases and transactionsnot Knack
Service discovery and dynamic configuration where readers need to be notified of changes rather than poll for themnot Knack
Coordinating failover in a clustered database, as Patroni does for PostgreSQLnot Knack

Knack

A member or client portal where thousands of external people need their own login and see only their own recordsnot etcd
Replacing a shared spreadsheet used by a team that has outgrown it but cannot justify a developer to build a bespoke internal toolnot etcd
Inventory, asset or case tracking for a small operations team that needs roles, forms and a record of who changed whatnot etcd
A registration or booking application for an association, school or non-profit where the user count is large and the record count stays modestnot etcd

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

etcd

It is sized for coordination data, not application data: the default backend quota is 2 GB and 8 GB is the documented recommended maximum, and exceeding it puts the cluster into a NOSPACE alarm where it accepts no writes until an operator compacts, defragments and clears the alarm by hand
Every write is replicated and fsynced before acknowledgement, so cluster performance is bounded by the slowest disk in it; a member on network-attached storage with high fsync latency causes leader elections and cluster-wide latency spikes that look like network problems and are not
Adding members increases availability but reduces write throughput, because each write must reach a larger quorum; you run three or five members for fault tolerance, and increasing capacity means faster hardware rather than more nodes
There is no sharding and no multi-tenancy, so isolating workloads means running separate clusters, each with its own quorum, certificates, backup schedule and upgrade path, and that operational multiplication is often unexpected
Running it yourself is a real job: periodic compaction and defragmentation, snapshot backups you have actually rehearsed restoring, and rotation of both peer and client TLS certificates, none of which happens automatically outside a managed Kubernetes service
Losing quorum is not self-healing; recovering a cluster that has lost a majority means restoring from a snapshot and accepting that everything written since that snapshot is gone, which makes backup frequency a data-loss budget decision rather than a routine setting

Knack

Plans are capped by stored records, so an application that logs events or keeps history rather than current state climbs tiers on data volume alone, and archiving old records becomes a permanent maintenance chore rather than a one-off
API access is capped per day, at 1,000 calls on the entry plan and 10,000 at the Corporate tier, so a scheduled sync or a busy automation can exhaust the day's quota before the working day ends and integrations then fail silently
The application itself cannot be exported or self-hosted; records can be downloaded but the pages, roles, flows and business logic exist only inside Knack, so outgrowing the platform means rebuilding the app rather than moving it
Customisation beyond the builder is limited to injected CSS and JavaScript that Knack's support does not cover, so any non-standard interface behaviour becomes yours to maintain against a DOM the vendor can change without warning
Compliance capabilities that regulated buyers assume are baseline, HIPAA and GovCloud options, advanced SSO, IP restrictions and private environments, are gated to the Corporate and Enterprise tiers, so a small regulated pilot cannot legitimately start on an entry plan

Pricing, plan by plan

etcd

On request

No published plan breakdown. See the etcd review.

Knack

$59/month

Starter$59/mo
- 20,000 database records
- Unlimited users, tables, fields
- 25 AI credits
Pro$130/mo
- 50,000 database records
- Remove Knack branding
- E-commerce payments
Corporate$300/mo
- 125,000-2.5M database records
- App restore functionality
- Advanced SSO
EnterpriseOn request
- Dedicated account manager
- HIPAA/GovCloud-based options
- Custom pricing

Which should you pick?

Choose etcd if

You need raft consensus.
You also want linearizable reads.

etcd review

Choose Knack if

You need visual database builder.
You also want user logins and roles.

Knack review

Questions people ask

Is etcd or Knack better?: Neither clearly leads. etcd starts at On request and Knack at $59/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, etcd or Knack?: etcd starts at On request and Knack at $59/month.
Does etcd or Knack run on more platforms?: Both run on Web, so platform support will not decide this one for you.
What is etcd best used for?: etcd is most often used for storing kubernetes cluster state, which is what the overwhelming majority of etcd deployments are doing, leader election and distributed locking in a home-grown scheduler or control plane, using leases and transactions, service discovery and dynamic configuration where readers need to be notified of changes rather than poll for them, coordinating failover in a clustered database, as patroni does for postgresql. Of those, storing kubernetes cluster state, which is what the overwhelming majority of etcd deployments are doing and leader election and distributed locking in a home-grown scheduler or control plane, using leases and transactions are not what Knack is typically brought in for.
What can etcd do that Knack cannot?: etcd covers Raft consensus, Linearizable reads, Transactions, Leases. Knack covers Visual database builder, User logins and roles, Page builder, Unlimited users.

Answered from the vendors’ own pages

etcd: Can I use etcd as an application database?

No. It is designed for metadata and coordination, with a recommended maximum store size of around 8 GB, no sharding and a write path deliberately optimised for durability rather than throughput. Application data belongs in a database built for it.

Knack: Is Knack charged per user?

No. User accounts are unlimited on all plans. Plans are bounded by stored record count, file storage, API calls per day and automation transactions.

etcd: How many members should a cluster have?

Three for most cases, five where you need to survive two simultaneous failures. Always an odd number, because an even-sized cluster gains no additional fault tolerance while making quorum harder to reach.

Knack: What happens when I exceed the record limit?

You move to a higher tier or reduce stored records. Because the limit is on data rather than people, apps that accumulate history hit it while apps that track a fixed set of entities generally do not.

etcd: What happens when the store fills up?

The cluster raises a NOSPACE alarm and stops accepting writes, becoming effectively read-only. Recovery requires compacting old revisions, defragmenting each member and then explicitly disarming the alarm, all done by an operator.

Knack: Can I export my application or self-host it?

You can export record data. The application itself, its pages, roles, permissions and flows, is not exportable and cannot be self-hosted, so leaving means rebuilding elsewhere.

etcd: Why is my etcd cluster slow or unstable?

Almost always disk latency. Because every write is fsynced before acknowledgement, slow or shared storage causes heartbeat timeouts, leader elections and cascading latency. Local SSDs with low fsync latency are effectively a requirement.

Knack: Is it suitable for public-facing portals?

That is its strongest case, because logins are unlimited and role-based permissions are built in. The constraint is record volume and API throughput, not audience size.

etcd: How does it compare with Consul or ZooKeeper?

All three provide consensus-backed coordination. etcd has the simplest data model and the Kubernetes ecosystem behind it; Consul bundles service discovery, health checking and a service mesh; ZooKeeper is older, JVM-based and still common under Kafka and Hadoop-era systems.

Knack: Can I use it for regulated data?

HIPAA-aligned and government cloud options exist but only on the Enterprise tier, along with private server environments. Lower tiers should not be used for regulated workloads.

etcd vs Knack

etcd

Knack

The short version

Where they differ

What each one covers

Only in etcd

Only in Knack

What people use each for

etcd

Knack

Where each one falls short

etcd

Knack

Pricing, plan by plan

etcd

Knack

Which should you pick?

Choose etcd if

Choose Knack if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on etcd

More on Knack

Keep looking

Other head to heads